Quick update, then I will end this thread. After extensive research and a little help from ChatGPT, we have decided to deed these back to Marriott. It is annoying to consider paying Marriott to take them back, but it is by far the most cost efficient option.
I thought you may all be interested to know that the offer extended by the sales staff at Desert Willow involved a combination of purchasing and extending to reach 7500 DP at a cost of $48,000 plus annual maintenance fees of $6,000+. Not a reasonable consideration for two 72 year olds. Based on the math including the original purchase price, maintenance fees paid for twenty years and usage, I am not certain it would have made sense if we were two fifty year olds. Lesson learned!
BTW, it was very obvious to us that Marriott carefully tracks past “update meeting” encounters and interactions based on our experience at Desert Willow. If you prove to be a tough customer, they will not waste time with you in the future.
Thanks to everyone for your input. We will remain happy Marriott owners, just not at Canyon Villas.