Help with rental car

[Paticake]

I currently have 3 rental cars booked Help!!!! I first booked Alamo thru insiders code and 1 class upgrade for 1/22/16-1/26/16 for $171. I now have 2 booked thru Dollar/via hotwire for $135 and Dollar/via Expedia for $117. Alamo pickup at Dolphin, the other rentals are at Buena Vista Palace. I have never rented a car through either Hotwire or Expedia and never from Dollar. Help from experienced renters please!