Hello, Claudia!
What a wonderful trip you'll have to Walt Disney World with two little ones in tow! How exciting!
WDW has taken care of all the details when you travel with little ones; take a look at this incredibly helpful link which gives Guests
In-Depth Planning tips when bringing small children to WDW. One thing we've always loved about Walt Disney's website, too, is that height requirements are listed right on each park's attraction pages, so you'll know before you go which rides your little guy can ride and plan accordingly. On each park's page, select "Attractions," then click on any attraction for which you need to check the height requirement; here's a link to
The Barnstormer's page, which lists the height requirement as 35" or taller.
If you have a smartphone, download the free APP from Disney, My Disney Experience. Right there on your smartphone, you can find a list of attractions at each park; should there be a height restriction on any attraction, it will be listed right there, along with location, the current wait time and a quick description of the attraction itself. It's so convenient!
Assume that your little 38" tall prince
can go all of the attractions
except the following (there are far more attractions that he CAN ride as opposed to CAN'T):
MK: Space Mountain; Splash Mountain; Big Thunder Mountain Railroad
EP: Soarin'; Test Track; Mission: SPACE
HS: Rock 'n' Roller Coaster Starring Aerosmith; Star Tours; The Twilight Zone Tower of Terror;
AK: Expedition Everest; DINOSAUR; Primeval Whirl
Hope this helps! Have a wonderful trip! Be sure to send more questions as you think of them; we love to help!