I would suggest buying hopper tickets so you can go to more than one park in a day. Also make sure that they are the ones that don't expire - this is your 1st trip but it won't be your last.

Plus with the good exchange rate they're even better value. It also means that when you go again you don't have to buy any more tickets. I've got some from 2 years ago that I am still using. This visit we only did Disney twice and Universal twice.

Sue