Dear Ivan,
I hope you're having a wonderful day and I'm excited to know you'll be visiting the
Disneyland Resort with accommodations at the Disneyland hotel!
Generally, if you arrive early to your Disneyland Resort hotel, you can check in, store your luggage at the Bell Desk and enjoy the Disneyland Resort. This certainly includes use of the hotel pool. You will absolutely love the
Disneyland Hotel pools which feature the super fun Monorail water slides!
As far as your post check-out plans, pretty much the same rules apply. You are welcome to store your bags at the Bell Desk and enjoy the amenities and recreation (including more pool time) at the resort until you're ready to leave.
One thing I always recommend to guests is that they book a character dining experience. The
Disneyland Hotel has
Goofy's Kitchen, which is a fun and lively breakfast option with the best "peanut butter and jelly pizza"...yum! Disneyland Resort hotel guests have preferred access to reservations at some of the most popular dining spots, including Goofy's Kitchen.
I wish you a magical time at the Happiest Place on Earth and thanks for stopping by the Disney Parks Moms Panel!
-Anabel M.