AK has now moved into my 'fav' park slot, due to FOP. Now this park gets priority when picking which park to put in what day or which park will get repeated most.
If you're able (you didn't say anything about if on site or not for use of EMH & didn't mention if your park days are consecutive, or anything about your touring styles like you're rope droppers & commando tourers or you like to sleep in & arrive at 10 & be out by 7 for dinner... all are factors when planning), I would recommend visiting 3 parks, then letting the group decide if they want to revisit MK or another park you've been too, or try the 4th park they haven't seen. The realty is a 4 day non- hop ticket is still a sampler ticket. You can sample four parks or you can dig a little deeper or do repeats in 1 park but have to forgo another park entirely. You will still have fun either way, just let the kids know your taking them for an introduction trip, that they will NOT see everything, & you're going to try & hit some highlights you think they'll enjoy.