Currently at property and stayed at The Cove Atlantis a couple of days ago. Night and day. Service is poor at Atlantis and food was overpriced compared to Baha Mar.
As a Glob on points was upgraded Ocean View (suites were all booked up 2 months ago). Beautiful property. 4PM late checkout was confirmed at check-in.
Eligibility for Grand Club admissions is checked during breakfast and evening service. ^
Service was great in the club. Asked for an orange, got a fruit plate. Asked for hard boiled eggs during breakfast, (they ran out and haven't refilled), got a bowl of four. Overall food is on par with international club offerings (as opposed to US club offerings).
Do note that a non-show penalty on restaurant reservations is $100.