My wife and I, along with our son (13) and daughter (9), will be visiting DisneyWorld for the first time this October. We're wondering if some of you with experience could give us your advice on whether we, or some of us, should have fanny packs.....should we all have a back pack? If we bring a back pack(s) what do you do with them if all four of you are on a ride? If a fanny pack is recommended ...I am a bigger guy with a 42" waist...are there certain brands that are made bigger? Any suggestions would be greatly appreciated.