I think it depends on how much money you want to shell out for a train ride. I know, I know it is fantastic, but it's an individual problem. We have been to IOA for the first HP park and we loved it. We didn't care much for the other parts of the park though. Now fast forward to this year, and we are staying at WDW, but going to Universal for one day only. Why? We have been and done everything at the first HP park. We don't feel that we want to pay the extra for a train ride. I would like to see it, but it's just too expensive FOR US. We will spend all our time at the new HP attraction in Universal studios and have a blast. That park is just right for us; we love the minions, MIB , the Mummy, to name a few of their awesome attractions. So, for us, we won't be spending the money for the train ride this trip. Have a blast either way!