Yes it is, you follow the signs for the main MK carpark, continue through the carpark gates/turnstiles ( you will have to pay the regular fee, but this may be refunded later with your package). when you pay your carpark fee tell the CM that you have to go to the Contemp to meet for a MK tour, they will tell you to follow a line of some colour I can't remember.
Basically the main MK parking lot traffic go off to the left and you take a right fork, it will be marked resorts, so it's best to pick a gate as far right as you can get. You'll come to a traffic light ( maybe two) GF and The Poly are a left turn you'll be going straight on and the turn into the Contemp is a right turn off that road. There will be a parking attendant at the front gate of the resort. Sometimes you can ( or could) park in this carpark , at other times there is an overflow carpark that is on the other side of the road. The CM will tell you which is better for you.