Hotel
For the reserved hotel room block, use "Mueller & Lyon Wedding". Please book early if possible, especially with the great room rate. This hotel is convenient for all wedding events and is right next to the Arch grounds. The hotel is a 5 minute drive to the reception venue, 612North. The hotel is a 10 minute drive from St. Francis Xavier College Church. The hotel is 20 minutes from the airport. Parking at the hotel is $30/day (including overnight), and you can come/go as your please throughout the day.
Rental Car
For those that want an AirBnb style car rental, go through Turo. I have had awesome experiences with it. The owners of the car will drop the car off at the airport (potentially a small up-charge for airport drop-off) for you to pick up. Typically, this is a much more budget friendly route, especially if you are needing a mid-class vehicle.
Travel Note
Ride sharing apps, such as Uber and Lyft, are a great option in St. Louis and have really reasonable rates compared to taxi companies. Should you need, you can schedule rides in advance through Uber.