Ease of booking, ease of entry. The only think I would like changed is the walkway part, where you have to go between the C garage the B garage.
Walking into the road, and the curb is not great.
The kiosk at PVD needs to be upgraded. When I do travel I always use your garage and checking in and checking out is a problem. You need better screens so that all you have to do is swipe your phone across it. I have to exit my vehicle every time to try and swipe my phone under the portal to get in and out.