I haven’t heard of this happening much.
In my personal experience I have had the following:
+ Had to walk someone
+ Had a little buyers remorse (but mainly the amount)
+ Had a party that wasn’t quite what I expected
As Dex mentioned the best ways to ensure a fantastic party that is what you expect:
+ Invest the time in getting to know the ladies you are interested in.
+ Negotiate exactly what you are looking for from the party. Don’t be shy, they have heard everything and may be able to recommend someone else if it doesn’t fall in their area of business.
+ Know your financial limit for each party (whether it is one or more than one) and stick to each limit.
+ Be willing to walk someone.
+ Have a great time both in and out of the party.