Booked our rental online so that part was easy. Day of we got to the desk right at 8:15am and waited in line for like 10 minutes. Kind of a pain. Picking up our car took 2 seconds though - they basically just handed over the keys and set us on our way. The car itself was gorgeous (new Cadillac) and the pickup location in The Venetian garage was very convenient for pick up and drop off (since we were staying at The Venetian). The hours are weird (8am-4pm) so if you need Avis after 4pm, you're pretty screwed. The service was hit or miss