I bet that would be the reaction if everyone bid their vacation!
Here is a better idea. Do what we do at DAL/NWA--you don't have the option of "not" bidding your vacation. You WILL take all your allocated vacation days, whether you want to or not (and I can't imagine not).
It is called negotiating a provision in a contract. Why would you bad-mouth guys not bidding all their vacation when the contract allows it? Why don't you just get a better contract so as to not even have this as an issue?