1 Have Marriot Gold
2 Email La Quinta with a screenshot of status: Get Elite after only a few hours *YMMV Status Expires Dec 31st 2018
3 On Wyndham Website instantly go from La Quinta elite to Wyndham Diamond Status Expires Jan 11th 2019
4 Go to total rewards website and Put in Wyndham Diamond Number, Wait a week (it does say up to 7 days on the site) Get Total Rewards Diamond Status Expires Jan 31st 2019
Takes a while but worth it.
Since all the programs have different end dates you can keep matching back to the others. I plan on doing just that.
Also plan on matching to Mlife in Person once I'm in Vegas in January