
Coffee Trailer Electrical Planning: What to Know Before You Buy Equipment
The espresso machine is not the problem. Everything running at once is.
Read →This is the first question every new mobile bar owner asks, and the answer surprises most of them: many mobile bars never sell a single drink. The moment money changes hands for alcohol, a license is generally required.
A note on alcohol. Requirements for serving alcohol vary by state, county and venue, and they change. This is educational material, not legal advice. It does not tell you what you may legally do and cannot obtain any permission on your behalf. Verify your own position with your state alcohol authority, your venue and your insurer before you accept a booking.
Most mobile bars operate as dry hire businesses. The client purchases the alcohol themselves, and you provide everything else: the bar, the bartenders, the ice, the mixers, the glassware, the draft system, the experience. Because you are not selling alcohol, dry hire operators in many states are not required to hold a liquor license the way a bar or restaurant is, but this varies by state, county and venue, and you have to verify your own position locally before you rely on it.
Dry hire is a recognized service business model rather than a workaround, and it is the reason much of the mobile bar industry works the way it does. That does not make it automatic: some jurisdictions regulate the service of client-supplied alcohol, and some venues impose their own requirements on top.
Dry hire changes your licensing position. It does not remove your risk. General liability is non-negotiable, and most venues will not let you on the property without a certificate. If alcohol touches your business in any way, liquor liability coverage is essential even under a dry hire model.
Your bartenders should hold responsible vendor certifications such as TIPS or your state's equivalent. And your client contract should clearly spell out who supplies the alcohol, who is responsible for checking IDs, and what happens when a guest has had too many.
That contract language matters more than almost anything else in your business. It is the difference between a bad night at an event and a lawsuit that follows you home.
The dry hire model is simple once you understand it, but the details live in your state rules, your insurance policy, and your contract, and those three documents have to agree with each other. Most new owners piece this together from forum posts and hope. There is a better way.
Only need this part? Alcohol Service Models & Operations is $97 on its own.

The espresso machine is not the problem. Everything running at once is.
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The trailer is the last decision, not the first.
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Sized for the worst minute of the day, not the average one.
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The waste tank is bigger than the fresh tank, and that surprises people.
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The certificate is not paperwork. It is whether you can take the booking.
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Generic templates ask a coffee trailer the wrong questions.
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A mobile bar has bookings, not daily revenue. That changes the plan.
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