How to Plan Cold Storage for Outdoor Events

You're planning an outdoor event — a wedding, a corporate picnic, a music festival, a charity fundraiser. Food and beverages are a major part of the experience, and you need cold storage that works outside the comfortable confines of a commercial kitchen. Get this right, and your guests never think twice about it. Get it wrong, and you're dealing with food safety issues, warm drinks, and an event you'd rather forget.

This guide covers everything you need to know about planning mobile cold storage for outdoor events, from the questions to ask before you book to day-of logistics that make everything run smoothly.

Step 1: Determine What You Need to Store (and at What Temperature)

The single most important question is temperature range. Not all cold storage needs are the same:

• Walk-in cooler (33–50°F): Beverages, fresh produce, dairy, floral arrangements, chilled desserts, dips and spreads, pre-portioned proteins that will be cooked on-site the same day
• Walk-in freezer (0–32°F): Frozen proteins, ice cream and frozen desserts, frozen appetizers, backup ice, items being held for multiple days

Many events need both. A wedding with a full catering operation might need a cooler for fresh ingredients, beverages, and florals, plus a freezer for the ice cream served at the dessert station. Determine your needs first — then size accordingly.

Step 2: Calculate How Much Capacity You Need

Sizing cold storage for events is more art than science, but here are some practical benchmarks to start with:

Beverage storage

• A standard case of 24 cans or bottles takes up approximately 1.5 cubic feet
• A keg of draft beer takes up approximately 2 cubic feet and serves roughly 165 12-oz servings
• For a 100-person party with 3-hour bar service, plan for 4–6 cases of wine, 8–10 cases of beer, or equivalent — plus non-alcoholic beverages

Food storage

• Catering operations typically need 1–2 cubic feet of refrigerated storage per guest for a full-service dinner event
• For large volumes, full sheet pan hotel pans (20x12x2") are the standard unit — a medium trailer accommodates 60–80 hotel pans on shelving

Step 3: Plan Your Power Source

This is the step that surprises most event planners. Mobile cold storage trailers run on electricity — specifically, a standard 110V 20-amp dedicated circuit. Here's what you need to know:

Venues with existing power

Most event venues, barns, and facilities have 110V outlets available near exterior walls or loading docks. Confirm with your venue coordinator that a dedicated 20-amp circuit is available where you plan to place the trailer — not just that there are outlets nearby. A shared circuit with other equipment can cause issues.

Outdoor locations without power

For events in truly remote locations — parks, fields, beaches — you'll need a generator. A 2,000-watt inverter generator is typically sufficient for a single mid-size trailer. If you're running multiple trailers, size up accordingly. We supply a 50-foot heavy-duty power cord, so the generator doesn't need to be right next to the trailer.

Festival and multi-vendor events

If you're coordinating power for a large event with multiple vendors, work with an electrical contractor to ensure adequate capacity. Underestimating power needs is the most common cause of cold storage problems at large events.

Step 4: Plan Delivery Logistics

When to schedule delivery

For most events, we recommend delivery the day before. This gives the trailer time to reach operating temperature and gives you time to load product without the pressure of guests arriving in an hour. For large events or events with complex logistics, two days before is even better.

Space requirements

Our trailers require a level parking area — roughly the footprint of a standard parking space for our smaller units, up to 2–3 spaces for our larger units. The area needs to be accessible for our delivery truck, which is a standard semi. If you have a narrow driveway, low overhead clearance, or other access constraints, tell us in advance so we can plan accordingly.

Loading and unloading flow

Think about the workflow for loading product into the trailer and retrieving it during the event. Ideally, the trailer is positioned close to your cooking or service area, with the door facing a convenient direction. If your caterer will be accessing the trailer frequently during service, position it for minimal foot traffic disruption.

Step 5: Day-of Checklist

• Confirm the trailer is at operating temperature before loading any product (allow 1–2 hours from startup)
• Load the heaviest items first and keep the most frequently accessed items near the door
• Designate one person as the cold storage manager — limit door access to prevent temperature fluctuations
• In hot weather, minimize door openings and close quickly — each opening lets warm air in and forces the unit to work harder
• Keep a battery-powered thermometer inside as a backup temperature check
• Have the COOLEX phone number easily accessible for any issues during the event

Common Mistakes to Avoid

Booking too late. For peak dates — summer weekends, major holidays — book your cold storage trailer as early as possible. Units for busy event weekends get reserved weeks or months in advance.

Underestimating in hot weather. A trailer in direct sun on a 90°F day works harder and may struggle to maintain target temperature if doors are opened frequently. In extreme heat, consider shading the unit with a tent or parking it in available shade.

Forgetting the pickup. Coordinate pickup timing with the venue and your cleanup crew. We retrieve the trailer after your event — just make sure it's accessible for our truck at the agreed pickup time.

Not accounting for extended events. Multi-day festivals need a plan for replenishing product. Know in advance how and when you'll be receiving deliveries, and size your cold storage to handle peak inventory levels, not just what you'll use each day.