The general admission area is directly in front of the stage. You will have had to pass at least two ushers (security) to get there. Two strategies: When you are escorted to a VIP area for the meet and greet, ask the escort to take you back to the main floor. Alternately, hope for a an opening act and try to get to the main floor during intermission (the easiest time is right after the opening act finishes its set, and you have to "swim upstream". If you have two friends with tickets to the main floor, you may also be able to participate in a ticket passing scheme, assuming that they don't also use some sort of handstamp or wristband strategy. It may also be possible for you to buy a second ticket for the main floor. It is quite possible that your ticket for the seat and whatever credential they provide for the meet and greet will be two separate documents. If this is the case, having bought a separate ticket for the main floor, you can now sell your reserved seat.
Good luck Fuz,
T