I don't think you should have any problems there. To go to pumpkin patch play area you have to walk up a little bit of an incline but then it is relatively flat. I am sure if you had any struggles they would be more than happy to accommodate.
I would call the farm since it involves outdoor accessibility.
It depends on which building it is in. You can them for more specific info.
I think you would be fine, there isn't any hills y you should be able to sit down and enjoy the birthday
Prolly not the place for you to go not very handicap friendly
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