They still have the build your own roller coaster at Epcot, agreed it’s a lot of fun. It’s in a sort of hidden corner of a technology attraction called Innoventions. In recent years more and more people have found it, so the lines have gotten just as long as the pavilions.
https://en.m.wikipedia.org/wiki/The_Sum_of_All_Thrills
I’ve never played laser tag, but maybe with 8 sea days on the transatlantic we’ll run out of other things to do and we’ll find out that we like it. 🙂