I would suggest that you keep a couple of things in mind.
One is that contracts for such small amounts are unenforceable in any practical sense -- It would just cost more in legal fees than the total of the rental, so there is little
practical consequence to a contract. I wouldn't worry too much about the wording, and I'd steer well clear of a bunch of legal mumbo-jumbo.
Two things that are critical about a rental, however, can be helped by some form of
clearly written understanding between the parties. The most important thing in any rental is
trust, and
clear understanding of the details of a rental is the first step toward trust.
Also, I am of the opinion that the biggest risk in a rental is not unscrupulous owners or renters, but lack of understanding (even by owners) of all of the ramifications of a rental. Owners need to thoroughly understand the renting process, but also the impact a rental could have on banking deadlines, borrowed points problems, use year expirations, reservation points, holding points, and all those pesky little details of
DVC. Renters need to really understand that there is a
world of difference between renting a ressie from a DVC owner and reserving a hotel room. They also need to understand that, no matter how much an owner wants to help them if their plans change, the owner
may not be able to help them.
A very clear and well-understood agreement between the parties on total cost, specific nights covered, deposit dates, full-payment deadlines, and procedures for changes and cancellations protects both parties.
[ETA: If a contract helps you achieve that understanding, good. But usually contracts get all fuzzied up with gibberish like "force majeuer" and other meaningless terms that someone thought sounded cool and official. Go for
understanding and you'll be fine.]