Houston has 2 airports - Hobby Airport & George Bush Intercontinental Airport. Southwest Airlines flies into Hobby. United Airlines & most other airlines fly into Intercontinental. Hobby is approximately 20 miles from the Omni Hotel, and Intercontinental is about 26 miles from the Omni Hotel.
Do I need to rent a car?
No. Ubers and Lyfts are plentiful. And there will be a shuttle to and from the rehearsal dinner and wedding from the Omni and Hampton Inn. Also, the Omni has a free shuttle for guests within a certain radius.