Booking windows have to do with the contract and the resort.
For home resort, all owners have to have the same rules…FL law requires it…and our contract guarantees us just one month…we get four.
No owner of a resort, no matter how they acquired points, gets the same rules.
Now, for trades, it’s based on the rules as to how it enters into BVTC, but again, the rules are based on the rules and not owners. And the
DVC resort agreement allows trades once home resort is over…
If BVTC were to charge for all trades…which they are allowed to do per contract…theoretically DVD could pay the fee for those with membership extras or a paid program.
The other things you mention having nothing to do with DVC and apply to all onsite guests.
In that case, Disney can do what they want.