Hello thewebbys, welcome to Cruise-Chat.
Yes, you and rent a electric scooter. The concierge will be sending you an email about a week before the cruise. He will arrange for a scooter via email. He will meet you at the terminal and take take you through the check-in process. When on the ship he will take care of all your needs. Ice show tickets, excursions, etc. There are free cocktails in the Concierge Lounge from 5pm to 8:30pm. You can also check out movies if you want. Usually people start to board before noon. You won't be able to get to your suite before 1pm to insure your cabin is ready. I was in an Owner's suite on the Voyager in December and enjoyed it. I normally stay in a balcony cabin, so it was a treat to have all the extra room, especially the bathroom!
The Adventure is a great ship. I'm sure you'll love her as much as we did.