Hi, I'm a DL MWer, and I just booked a "spur of the moment" WDW trip for the Princess Half Marathon. I need some help! I'll be traveling with 2 of my kids 11 and 9(boy and girl), it will be their 1st time, we have a 4 day park hopper. Should I add the dining plan? Is it worth it? My kids are regulars at DL what MUST we do at WDW? Thanks all!!