Great pictures. I believe though, that the tanks in the first picture are M-36 Tank Destroyers.
The Teli Savalis ride was an M18 Hellcat
You are correct, these vehicles are M36 Jackson Tank Destroyers, not M4 Sherman. Tank Destroyers of all types, tracked and towed, enjoyed their finest hour during the Battle of the Bulge. Overall, the vehicles and the tank destroyer concept was not a great success during World War II. However, the Battle of the Bulge was an exception and many tank destroyer units performed heroic feats stopping German attacks. Their open turrets made them very vulnerable to artillery and mortar attack.
Yes they are.