Indeed it does, there's access through the lobby on the first floor as well as access directly to the convention center concourse from the second floor. This is also true of the Marriott on the other side of the convention center, too.
Yes. You do not have to exit the hotel to get into the convention center. They are linked on the second floor
I would call it more of a side entrance. As others have stated you can enter the convention center from the first floor lobby.
Yes, the connection is on the second floor from the lobby.
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