When Tommy the truck driver leaves the lobby, Ray puts the gratuity in his back pocket as the shot cuts to Tommy's truck pulling in. In the next shot, looking at Ray from the side, he puts the gratuity in his back pocket again.
None of the characters are wearing seat-belts.
At about 45:20, when Cage walks up to Tunney sitting on the computer, both of their wireless mic packs bulge out on their belts.