Duckfan:
If you're used to going in off season, the 2nd week of June will probably seem very crowded(and probably hot) to you. Don't think that you won't have a good time though....we've been the second week in June many times(we'll be there the 5th-20th this june) and have always had a great time....disney world really, really starts getting crowded about the third week in June as by that time most everyone is out of school....If you are staying on site, take advantage of EMH...you can really get alot done in that hour believe it or not...also, not matter where you stay, take full advantage of Fasspasses...they will increase you're enjoyment level by decreasing your aggravation and wait times.....take advantage of EMH and FP and remember to take a break in the afternoons if time allows and I'm sure you'll have a great time....You'll be at Disney!!!!