What else are you saving your stickers for? I've done a MIA-LAS-MIA run every third week this year and even in the older planes on the red eye you can't compare the experience between the two classes of service. I've even been known to buy a couple of extra stickers just to make sure I upgrade.
Next round trip gets me EXP, finally
I can't freakin wait!
Oh, and as for food service on the red-eye, I can't speak for your flight but LAS-MIA is 2,175 miles and they never serve food on the flight that departs 11:10p and arrives at 6:45a.