This was not a trolley but a van with limited visibility. We had to walk around for 40 minutes searching for our tour. We did the hop on hop off but basically he drove us to one mission and back and dropped us off. We had to walk 6 blocks to the tower of the America’s. River walk cruise was nice but again, we had to walk to it. Don’t waste your money. Very disappointed and we purchased this thru Viator on Trip Advisor.