Greetings, David!
Welcome to the Disney Parks Moms Panel, and thanks for your wonderful question. You are going to just love staying at
Disney's Grand Californian Hotel & Spa. This is my favorite hotel at the Disneyland Resort for so many reasons. From the grand lobby to the subtle Disney touches in your room, there are astonishing details around this entire hotel. Plus, there is fantastic dining and shopping right on property.
When it comes to using the hotel Guest entry gate into Disney California Adventure Park, you can only utilize this entrance if you have a Park Hopper ticket or if you will be only visiting Disney California Adventure Park with your
1 Park Per Day Ticket. If you plan on visiting Disneyland Park with your 1-Park Per Day ticket, you will need to exit the hotel at the Downtown Disney District and walk to the main entrance of Disneyland Park. If you wish to upgrade your park tickets to Park Hopper tickets, you can always do this at the Main Entrance Ticket Booths located in the esplanade between the two parks. I hope this helps.
As a hotel Guest, make sure to take a look at some of the great amenities and recreation experiences offered during your stay. I love the morning Get Up and Go Power Walk and attraction trivia that you can receive at the Guest Services Desk. These little extras are what really set these Disneyland Resort Hotels apart from others in the area.
Please return if you have any other questions, and have a Zip-a-Dee-Doo-Dah day!
-Jennifer