Gated parking lot and van service is secured and limited to flight crew and few others. No chance you'll get access. More than one offline JSer has mentioned to me that they park across the street and walk over to the guard shack. A few of our pilots do the same and there is plenty of parking there so you should be good but....ymmv. I feel like it's a don't ask, don't tell kinda scenario at Brown. A note on the dash saying 'crew' and your cell number wouldn't be a bad idea.