We've done this for years, and we were happy to get the free coupons and occasionally even cash. Lately though the 'gifts' have been going downhill. With the inflated prices at the casino they are not a value at all, (unless you're unable to leave the casino.)
While we generally enjoy the programs, that's not enough for us to take the time to do this. After all, they're just television shows! Sorry to say this was probably our last time.
If our help truly is valuable, then they should demonstrate that in the 'gifts.' We'd advise passing on this.