I know because I had not yet paid my MF so Four Seasons Aviara rejected the deposit until I paid.
It sounds like you can’t rent reservations at the non-home resort but it sounds like there is not mention of depositing into an exchange program.
I asked ThirdHome if they allow deposits from II and EliteAlliance. I have not heard back yet since it’s the weekend.
I paid a fortune to Elite Alliance in membership fees and exchange fees. Then I had to cancel my weeks with them. I hope I can deposit them into ThirdHome since EA has so little inventory and my membership expires in April. I am less concerned about II because they are more flexible. I have a week with them that expires in March but I can cancel it and get another year’s extension.
Ok; that deposit with Aviara would be treated differently because there is an affiliation agreement between that resort and ThirdHome. There isn't an affiliation agreement between Vistana and ThirdHome - I've deposited my 2021 Vistana home week into ThirdHome, had it booked, and added a guest name to the reservation all in 2020 prior to paying my fees for the new year.
As far as depositing from II to ThirdHome goes, that's prohibited by the II
Terms and Conditions, General Exchange Procedures and Priorities, Paragraph 16, on page 8, which reads in pertinent part:
16.
The Host Accommodations may be used only for personal and noncommercial purposes. Members are expressly prohibited from exchanging or renting the Host Accommodations, including, but not limited to, offering the Host Accommodations for sale or rent to third parties through the use of a Guest Certi cate or otherwise. Failure to use the Host Accommodations will not entitle Members to use the Home Resort accommodations for the period relinquished.
I would expect that Ellite Alliance has similar restrictions; RCI does. The RCI Points
Terms and Conditions cover it by prohibiting barter as follows (page 3, emphasis added):
F. Commercial Use Prohibited. Use of the Network and/or RCI Points is for the personal use of Members and, if permitted, their guests, and neither Members nor guests may use the Network or RCI Points for commercial purposes or monetary or other consideration, including, without limitation, auction,
barter, rental, raffle or sale of RCI Points, Confirmed Exchanges or Guest Certificates for example, and RCI reserves the right to limit the number of Transactions by a Member.
The problem is that these exchange systems would view allowing use of exchanged weeks in other exchanges as competing with their product, so they do what they can to prohibit doing that. There are other mini-systems where it's not something the operators really like, but the terms and conditions are set up to allow it (e.g., WorldMark, where there isn't ownership of individual resorts, with certain exceptions, and any member is specifically allowed to rent out their usage in any resort so long as it's not being done "commercially"). It's not absolutely clear to me where Vistana is as far as that issue goes, but depositing an SO reservation with a third party exchange seems a bit of a gray area where I'm not comfortable going personally, but you're likely able to get away with it at present.