As others have said, take luggage to bell services of your first hotel. They will move to second hotel while you are out enjoying your day. Then when you get your text for second hotel, you can go there and check in. Your luggage may not be ready then, but usually late afternoon/evening you can call bell services of your second hotel and have them bring it up to the room.
When we were at Riviera last year, we walked past bell services after being dropped off from the bus. I told the girls to go ahead to the room and I waited and asked bell services if they had the luggage transfers in yet. They said no. My grandtinker took a nap and I called around 4 and they had just arrived so bell services ran them up. This is really a great service as it takes the time and worry out of having to do it yourself.