Bordeaux on Explorer

We are on the Explorer next May and overnight in Bordeaux but I just found out today from Regent that we are docked in the city center until 5 p.m. On the first day and the the ship relocates to the Bassens Port which is around 30 minutes from the city center. We are so disappointed as before we stayed docked in the city center overnight so you were able to walk into town in the evening and have dinner and then return to the ship. Also we arrive in the city center at 10 am and the first excursions are not offered until 1:30 pm. This is very unusual. Have any of you who have been to Bordeaux and docked at the Bassens Port hired a driver for the evening to go into town? Are cabs reliable in Bordeaux? From others I have heard they are questionable?