The drop rate of stuff definitely seems quite high. I'm working with four 80s, but I've gotten a crapton of stuff. I got two pets and one scythe during the Midsummer Fire Festival (and all on the same character, boo), and that was it. So far for Brewfest I've gotten two rams, one kodo, one remote, one shanker, and three tankards. A guildie got a shanker, a tankard, and one other thing (ram?) all from the same bag. It's nuts.