SPG Preferred Plus status is a seldom publicized status tier which essentially offers members some of the the benefits of gold status including space available upgrades to "enhanced rooms" and 4pm check out. Unlike Gold status you do not get a welcome gift or a 50% point bonus. The best part of this status is that it is free to all AAA members and to SPG American Express card holders. There is very little information about this status level on SPG's website.
If you are a AAA member you have to sign up for this benefit, and details can be found here.
Call 1-866-782-7737 to join Starwood Preferred Guest® or to upgrade your account today - simply mention enrollment code "AAA/CAA" to start enjoying the benefits now.