Can I earn more than one Reward before I redeem? Is there a limit to how many Rewards I can have at any given time?
As a Gold member, you are eligible for a Reward for every 125 Stars you collect, but you do not have to redeem it right away and can continue to accumulate beyond 125 Stars.
For example, you can have 250 Stars in your account and redeem them for two free Rewards at the same time.
Note that your Stars do expire, however, so be sure to redeem your Stars for Rewards before that happens. See Star expiration info.