One reader asked if there's an age/height/weight requirement to ride the Aqua Duck, the Disney Dream's "water coaster" that takes you on a one- or two-person raft through a series of enclosed tunnels -- some in transparent tubes -- like a roller coaster.

There are no age or weight requirements, but riders must be at least 48 inches tall. They measure kids at the start.

My six year old niece, who was a little wigged out on Space Mountain, thought the Aqua Duck was a blast. It's actually pretty tame, so don't worry about freaking out your kids. They'll want to ride it again and again.