At the convention in Boise, Idaho, waiters with trays are stood on either side of the stage while two speakers address the audience. Usually, waiters would disappear after they had served the drinks.
When Morgan is given his fake California ID, it shows a Blue and a Red Bar below the name and address. The Blue line is to denote a provisional license for those under 18 at the time of issuance, and the red bar is to denote what year the ID holder turns 21. Morgan appears to be in his 30's, so there would be no colored bars on his ID.
Morgan Sullivan's fake California Driver's License expires on 05-30-03. His birth date is listed as 08-13-65. An actual CDL would expire on the same day as the licensee's birth date. Even the cheapest of fake ID's wouldn't overlook this important point.
In one of the airport scenes actors on the top left staircase can be seen waiting for their cue. Well, either that or the characters decided to stop and take in the scenery...
When Morgan and Rita are taking off in the helicopter the crew is very clearly reflected not only on the helicopter but the bulletproof shield that comes down.