Today I bought a Jabbawockeez ticket through the Travelzoo deal ($49 total) and then got two more comped from MyVegas. Despite the best efforts of the MyVegas phone rep, the computer wouldn't let him get them in the same exact row as the other ticket I had already purchased. So now I have two tickets that are four rows behind my other single ticket. Worst-case scenario, we'll sit this way, but I have this glamorous "Old Vegas" notion of tipping the usher, where he'll work it out and get us good seats together. Is this a possibility? How much would you suggest I tip?