wow jwb... did you not read the end of the post? if you have nothing nice to say, don't say anything. yes, i agree... this post would be more appropriate in the FOD forum "offtopic", but i've seen more than a few offtopic posts on this forum, so it's not all that inappropriate, since it is only some of the people in larki who actually know clouds.
anyway, as for the actual post... i don't have much opinion on the matter. the one thing you said that concerns you is getting paid. if it's about price, i wouldn't have any idea what you should charge. but if it's about how/when to get paid, an informal contract is probably the best idea. yes, some people might be put off by having to sign a contract to have you cater for them, but if you make it simple enough, and explain it to them when you give it to them, it shouldn't be too bad. maybe just something as simple as having the date/time set in stone, and having them pay 25 or 50% down payment when they give you the contract, with the remaining money the day of the event.
--jason