A good idea when you are out there is to go to the tourist information and get a ticket for the " I Ride" it is a bus that goes up and down I-Drive you can buy a ticket for as many days as you want,it is very cheap, you can then take the I-Ride directly to sea world, and you can get connecting buses from there to Disney parks, if you are going to universal i think you take the I-ride to sand lake road and then a connecting bus, but sometimes it is just as well to take a Taxi, they are pretty cheap, also some hotels provide free transport to all the parks, when you come out of the parks or evaen waiting at a bus stop a people carrier may stop and ask you where you want to go, negotiate a price and they will take you directly there, we did a lot of that, and when out eating go to the Ponderosa or Dennys very cheap good value food, have a great time, Ray
As for the exchange rate it could go either way, I think I would buy now though just to be sure.