email from total rewards re: slot play for reward credits

Keep getting emails from Total Rewards to play slots games and, earn reward credits.....It says to sign into Facebook to play. I really don't want to sign up for a Facebook account.....Anyone know of a way to play this slots for RC's without putting up my personal info on Facebook?

The only way I know of to play these games is through Facebook. And the only way to actually earn RC's is to purchase chips. Otherwise just playing the games with free chips doesn't earn you any RC's.

- Linda in TX

Humm, I figured there was a catch to it...........Thanks for the info Linda.
WhatEwa