We found the double strollers to be a big PITA everywhere: airports, parks, BUSES, rooms. The first year we took our BOB dualie, it was just so big, even folded, that we dreaded getting on the buses. The second year we brought our McClaren double since it folds much better, it was still a pain. Now we bring two single McClarens and it's just much easier. We can split up with the kids and one person isn't stuck with a big double-stroller. They are much faster and easier to close for buses and we can store them in the closet of our room. I definitely think the doubles are harder to get through crowds, we tend to be fast walkers and kinda zip around slower people, much easier to do in single strollers.
All that said, we only have the two kids and there's usually five adults, so we don't really need to worry having extra hands.
