You can usually have them printed without a phone number. Many banks automatically mail them to the address on the check, so when you get here, they'll be waiting. Remember, don't have anything mailed to Baker before August 20. Call your new roommate to make sure that you won't end up with two of the big things. Give relatives, friends, and neighbors your new address.
Care packages are good things.
Conversely, get the addresses of anybody that you might want to write. If you're coming in the day before, confirm your hotel reservations, and make sure that you are getting the Rice discount if the hotel offers one. Get plenty of sleep.