you're so lucky! we just got back on friday! we were at the oc, room 5421. very nice, renovated room, with internet access! we had our laptop with us. it was a hard wire connection, not wifi. it's free! there is also internet access in the lobby, but since we had our laptop, we never used it, so i don't know if they are free. have a great time!
Stayed at the Marriott Hotel itself the safe are small so I would thing like everyother places I have been too, if they do have they are small. You can put it back in the suitcase like I do and lock the suitcase, or buy a lock at a hardware store that you can hook on the computer and a chair or cabined or even the bed, that way it can not be taken unless they take the piece of furniture.
My husband and I always travel with our laptop, and even occasionaly left it just straight on the table but shut down and have had good luck, in Jamaica, LAX, NY, and on.