21 Royal discount for Club 33 members?

[Lillebelle]

Hint: If you know a Club 33 member and that person makes the reservation and attends, the group price is discounted.

The above quote is from a 4 year old thread about 21 Royal. I was wondering if anyone has any information, either old or more recent, about what kind of discount that might be (or if the discount still exists)? Thank you in advance!