Not a fan of the first two especially at the cost now of the Celine, I think it is about $500 per couple now including tip.
#3 we did for a day, make sure you get reservations for both chairs and lunch and note that the chairs I think are $35 a set. Also if you don't want sun ask early for a second umbrella as the ones they have set out don't move and the chairs don't move much either. Lunch was good, and I think our total bill for 2 of us was a bit north of $200 for the day. I personally prefer going to Grand Case if I want a more luxury beach day although I do like Mullet. Captain Frenchy's, LTC and GCBC all are better in my opinion and less money. I would guess Kalatua is trying to compete with Anse Marcel and Coco's.