Vacation rental agreement forms are very similar to a rental lease agreement, except they have very specific terms and clauses needed to addresses the uniqueness of these very short term rental situations.
TIP: Be careful if you're just starting off in renting your property short term. Short term and vacation rentals are subject to tax according to the IRS. Here's a helpful article on the IRS rules surrounding tax and vacation rentals.
To offset the tax you owe the IRS, consider adding that tenants are charged tax, and include it on your vacation rental agreement form as a separate fee. By showing it as a separate fee, it will create a much easier way for you to keep track of the money you owe to the IRS.
Give as much information as you can in the form so your guests don't claim to be unhappy from lack of knowledge later on. Manage their expectations, and you'll end up with a good short term tenancy.
Tip: THERE ARE MANY, MANY SCAMS RIGHT NOW TARGETING SHORT TERM AND VACATION RENTALS. BE VERY CAREFUL TO USE A SYSTEM OF CHECKS AND BALANCES WHEN BOTH ADVERTISING YOUR RENTA, AND TAKING PAYMENTS. It's usually best to use a system like Airbnb that already has security systems in place to help protect your business efforts.
Some of these scams are sophisticated, and are hard to identify until it's too late. If ANYTHING sounds "phishy"... it most likely IS trouble.