I've always wanted to try it! Hopefully we'll be able to go in January, but we have a little problem

.
Our party is 3 adults (me, DFiancee and her DMom) and 1 teen (her 16yo DBrother).
What can he do on the Boardwalk while the rest of us go in for at least an hour (9h30 to 10h30 probably after we leave HS on EMH)?
We don't want to leave him just standing there alone while we go see some nice dueling pianos!