I don't know anything about the age limit (I'm too old for that...). But in general I prefer Priceline. I usually check Hotwire to see if they have anything available on the date and location I want to stay at a hotel, then I check some other sites (including BetterBidding), go to PL and bid lower than what Hotwire offers. Usually that works great.
I use Priceline only for hotel rooms and an occasional car rental, never for airfare.

You might get more response in the Online Travel Booking & Bidding forum.

[This message has been edited by ql2112 (edited 08-10-2003).]

[This message has been edited by ql2112 (edited 08-10-2003).]