Does National stock any 4x4's (Jeep Wrangler or something) at SJU? And would the potentially be in that mix of midsize SUVs on the ES?
Hertz offers a 4x4 Wrangler but at 2x the price of a National ES reservation. I know it's not guaranteed but willing to roll the dice, or even pay for UG at National if it's in the fleet there.