
Our 4 year old DS turns 5 late August. He is 47". On our recent trip trip he cried over Primeval Whirl. To him it looks like a "kiddie" ride with the all the spinning and colors everywhere, but the height requirement is taller than Expedition Everest. He couldn't figure out why he got to ride EE, but they wouldn't let him ride PW. I kind of agree with him. It seems like a little bit of poor planning. The DinoLand area looks like a childrens zone with the colors and characters (Chester & Hester) roaming around. You would think that everything in that area would be suitable for little ones.

When we went to Disneyland in December he was just over 40 inches and was able to ride what he wanted to, even the TOT
I think he has grown at least an inch since then, but we'll see come check up time. It's tough when they really want to ride something and they can't, but I'm sure you'll be fine.My ds will be 4 tomorrow, and he was just shy of the 40-inch mark on our trip last week. Like 1/4 inch short, and he didn't get to ride anything but Star Tours. He wasn't tall enough, but they let him go anyway.
. Guess he won't get to ride Test track. On the other hand DD7 is 45.5 inches and 42 lbs. She barely made the height for Everest but they let her go on it since she was a hair below.