I'd say 15-20 minutes. You can't really cut across the golf course, so you've got to walk all the way down Old Turtle Pond Rd. and up Peninsular Rd. We were in building 45 and it was between 5-10 minutes to the Hospitality house, depending on how slow we took it.
If you have a car you would be better off driving. Otherwise you can always take a bus.