Yes be careful of the animals horns and stuff, the place isn't responsible for damages
If you are unable to roll down the windows in the back you would miss out on some of the feeding experience as the people in the back wouldn't get to see or feed them. However they could sit close to the front as you are driving so very slowly. My son is 6 and was to afraid to do much feeding himself. He was content to let me feed them and he sat sat in the passenger seat. There is also plenty to do in the walk through "zoo" area including feeding animals (for an additional fee. We got the zoo it all pass which was a decent deal)
we saw a full size RV go through. Interaction and feeding the animals might be difficult.
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