The thing I hate most about campsites is the other people – so in theory I am your target market… …but the benefit of camping is it is cheap – so charging a premium probably rules me out. Pods/yurts/wigwams all suit me better than camping because its less faff (for me) – they get you a premium but people looking for that will usually expect luxury like electricity, water, showers etc – and then you have to spend time cleaning and maintaining etc.
As TJ suggests there may be a market for ‘group’ camping where they wouldn’t be welcome on a normal campsite. But do you want them on your land – what can they damage / who can they piss off?
I wonder if there are any ‘adventure tour’ / mtb guide / ‘mtb holiday’ companies working in the area (or who would like to) who would see this as an opportunity – it would be much easier for you to deal with them than with every punter who fancies a weekend away.
At the end of the day though I’d be surprised if you could make as much money from this as e.g. renting for horses?