Just use them. Really, for both loyalty programs, try to book at least five consecutive nights so you get the "fifth night free." The longer you hold on to the points, ultimately, the less they are worth because these loyalty programs are always being modified to ensure they aren't losing their shirt.
I've really switched away from rewards points and am now using B of A cards that get me a minimum of $.02625 per dollar spent (and up to $.0525) just to get cash back. The travel bloggers will tell you they can do better with Chase points and Amex points but that's because they mostly travel first or business class during off peak times.
I have a Bonvoy Brilliant card. I got it because I figured I would use the travel certificate for the Syracuse University Sheraton (which is always over $250 per night during football season) and was really disappointed that there was basically no redemption availability their this fall. I'm keeping in though as I still used the cert at a Marriott in Hilton Head and definitely made use of the $300 credit.