I'm certain you could leave your luggage with Bell Services and ask them to deliver while you drive to the room.
If you decide to handle it yourself, each building does have an elevator. However, the buildings are fairly large and there's no guarantee you will be right nearby. Consider adding a "first floor" or "near elevator" request to your reservation if necessary.
The parking lots are right beside each building. Imagine pulling into a Wal Mart and you're 2 or 3 spaces from the front. That's about the longest walk you would have to make with your luggage to reach the building itself. From there, it's just a question of how far you need to go to get to your actual room.
Hope that helps.