Guest lodging

I think most people would expect to pay for their own hotel rooms. But if you do decide to pay for one hotel I would think you would need to pay for both hotels. I think it may be rude if you only pay for some and not all. But personally I wouldn't pay for everyone's hotel, I would have them pay for their own.

If people can book the cabins on their own, then I say yes. But if you are required to book these cabins as part of your contract in order to use this venue, then the cost is on you and your fiance.

The guests typically pay for their own accommodations. The only reason I would think that you guys needed to pay for it was if you were requiring people to stay at a certain place, like the lodge. If it is optional, they pay for themselves.