I'll have a 12 and 14 year old this summer. Will they enjoy it?

If they haven't been before, probably, especially if they're into Legos. If they're into rides, there are only a few geared towards older kids. But overall, it sort of is geared towards younger kids. The last time we went, my 14 and 18 year old kids wanted to stay home, but my 9, 11, and 15 year old sons wanted to go.

There is more than a couple rides for them, also have in mind they have a game room with Lego world games like Avengers.. Star wars ect... with diffrent game systems Xbox Ps4 that they could sit n play to while others are on the younger rides.

My kids were 10 and 12 and REALLY into Lego the last time we went and it was a little young for them.

Maybe? The park is truly aimed for ages 2 - 9. There is not many rides that lean towards that age group. But, there is a water park during the summer and I have heard good things about it from all ages.