I plan on staying 3 nights at Royal Pacific this summer and use Universal Express for 3 days as well. I'd like to check in early (6 or 7am) and then head to US or IOA. Can I take advantage of the "Express" at the parks on the morning of my checkin date? How do the hotels handle this? Will they give me a temporary room key to use at the park that day until our room is ready later that day? Any help or suggestions would be appreciated. Thanks.