This has been discussed pretty thoroughly previously, but I'll summarize:
- No executive or concierge lounge at this resort property.
- Griffin Club is a pay-up privilege more akin to a Ritz-Carlton club level.
- No children are allowed in the Griffin Club.
- You can book Griffin Club in advance for whatever rate difference is on the website or ask for an upsell at check-in. The upsell price has varied based on different reports, and it's unclear whether that is due to occupancy, original rate booked, or simply the whim of the front desk associate.
- No one has reported a free upgrade to the Griffin Club for any status or other reason.
- It is monitored by key and the attendant checking your room number (which presumably also lists the number of guests registered).