I would not go through transportation hoops to get there....too many variables. I would go the most direct route, which is probably the Front entrance. We were there last week and it was very busy. We walked in the park at 11:03, walked with purpose but not rushed to Test Track and rode single rider line. Ride broke down while we were on it, so all got to go through again. My kids spent some time building cars in the exit area. Rode Mission Space Orange (25 minute wait). Walked through Mouse Gears. Got a Joffrey's iced coffee. Headed out to World Showcase, took a few pictures. Stopped and got a Remy's map at the one store. Eventually made it to Frozen. I would guess by that point it was about 1pm. The line looked ridiculous (stretched back into China but we hopped in and it took about 25-30 minutes. IT wasn't bad at all. I don't think you have to be overly concerned with rope dropping it....yes you will have a wait but it won't be hours. Now if FP comes back prior to your trip...might be a whole different ball game.