Personally, for something that’s very special, qwerty and not available anywhere else, then it has to be a Rock Pool Day at Sheer Rocks, with the little extras that raise the experience to the next level. The food, drinks and service are excellent at both SR and Catherine’s (being part of the same company), but the views from SR take a lot of beating.
There is no beach at SR
SR also offers a Day Pass for a sun bed by the communal pool, with the spectacular views, plus the same excellent service, food and drinks
If seeking a “Beach Day”, with excellent food/drinks/service, well away from S.H.T. in Antigua, then the recommendation has to be Catherine’s Cafe.
Book early at both as space is deliberately limited.
Check out their respective webs and TripAdvisor to then make an informed decision.