Hello Andy. I think most, if not all the buses are free around the perimeter; it's been a while since I used them. You're after touch down shots I presume so you need to be around near the Renaissance hotel, close to the fence. You'll see there's a part of the fence that angles nicely inwards making photography easier around there somewhere, providing the (planned) double fence hasn't been erected yet; again, it's been a while since I was there. But I think you'll be alright for now.
EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM