Just know if you're going to do anything in a group (vacations, dinners, projects), people are going to get irritable. Even if it's a success! That's just part of it. Nothing provokes rage faster than planning a group event with friends or family. Whether it's fly fishing on the coast or vacationing in an Italian villa, the following will emerge: the non-responder, the bossy decider, the one who wants to split the bill ten ways, and the one who always shows up unprepared (we're looking at you, Ebar).