It took me two years to get a reservation at Marina Dunes. In the meantime, I got reservations at many other amazing properties like Westin Ka'anapali, Hilton Kings' Land, Hilton Marbrisa, Hyatt Northstar (ski season), Hyatt Sierra Lodge (summer), Hyatt Carmel, Marriott Timber Lodge. I believe all of these properties are better than Marina Dunes and easier to book (yes, they also cost at least twice as much for a week compared to booking Marina Dunes).
I have been able to book the WM Hawaii properties many times as well, but I have only stayed at WM Kihei, other trips were canceled. My daughter and wife said they would rather stay home than stay at that property, partly because we stayed there after Westing Ka'anapali and Hilton Kings' Land.
Hyatt Carmel Highlands is fabulous. There are a couple of others like Pine Acres Lodge and Pacific Grove Plaza. If you live within driving distance, you should look into these for bonus time. All of them are in a nicer area than Marina Dunes.
If you love the Monterey area, I recommend picking up a Hyatt points resort like Hyatt Sedona. Then you can book Hyatt Carmel Highlands. It is not difficult to book. It's also in a much more upscale area compared to Marina Dunes. You will find drug addicts next to the Marina Dunes property and there is an RV park on the other side of the road. We were scared to walk around.
When I had a reservation at Marina Dunes, I was hoping to book another room for friends who wanted to join us. The Country Inn is the closest hotel (other than Sanctuary, which charges $800/night). You can see the comments about how bad that location is on TripAdvisor.
Now $84 (Was $̶1̶1̶2̶) on Tripadvisor: Country Inn & Suites by Radisson, Monterey Beachfront-Marina, CA, Marina. See 353 traveler reviews, 142 candid photos, and great deals for Country Inn & Suites by Radisson, Monterey Beachfront-Marina, CA, ranked #10 of 11 hotels in Marina and rated 2.5 of 5...
www.tripadvisor.com
There are many great WM properties other than Marina Dunes. None of them come anything close to what Hyatt offers, but they are great options. My daughter's favorite WM property is Reunion in Orlando. It is like staying in a country club. A huge three-bedroom unit, water park, access to beautiful clubhouses, and plenty of other activities.
If you are buying WM to book Marina Dunes, I think that's risky. But if you would like to primarily stay at other WM properties, and think of winning the lottery ticket once in a while with a Marina Dunes reservation, then your chances of being happy are high.