me? i dont train at the main academy, i train at some of rga affiliate schools in nyc.
anyway to the TS, why dont you just be honest? tell the guys at renzos that you feel you are not a beginner because youve been grappling for a long time, and tell them you would like to go to their advanced classes(whichever one you want), and its because your there for only a couple of days and want to train while your in town.
Truth never hurts, just explain to them the situation, and that your an instructor or whatever(didnt read the whole thread).....but to be misleading is no good IMO....
Ive met a lot of the RGA top blackbelts who work there, and theyre all super cool...im sure you could talk to them.