I believe private car pick-ups can still go to the curb - have you looked at Execucar? It’s an offshoot of Super Shuttle. I used them in the past before Uber/Lyft became commonplace. Or, alternatively, have you considered parking long term? Then you would have your own car. You could drop off the spouse and kids and then park. Upon return, go grab your own car, park in short term (free for 15 min) and then help spouse with kids to your own car. You’d always have your car seats in place/installed.