I am coming to Houston this weekend. Flying in late Thursday and leaving early Monday with my sister. She will be in a conference Friday, Saturday, and Sunday am. I am considering renting a car since the taxi fare is about $50 each way from what I have found. We are staying at the Crowne Plaza downtown. Is a rental a good idea? Also, any must dos since I have 2 full days to explore. I am a huge sports fan and am considering a Rockets game Saturday night. Any recommendations are appreciated! Thank you in advance.