College girlfriends are planning a first time visit to San Antonio mid July. We are staying at the Contessa. From reading reviews, I know the river cruise is highly recommended as are the missions and Alamo. What about dinner on a river cruise? What is best transportation to see the missions? Anyone do the bikes? I see Boudros is highly recommended; any other MUSTS to see and places to EAT? Anything especially recommended for a group of girls? Any recommendations on Spa at Contessa? Any close areas outside city that are must sees? Just putting together notes from all the forums I have read to attempt to prepare. We know it will be HOT. Is the tubing recommended? So excited to celebrate 40 years of friendship. It will be a perfect adventure. Will appreciate any and all suggestions. Thanks!