If it is the same excursion we did, it was a very very small area. Personally, we would not go there again. The beach area was not good for just regular swimming, it was a rocky bottom and it was even difficult getting out to a point where you could swim to the snorkel area.
You should get some other opinions though. As for Orient - we heard it was a very nice beach, unfortunately we did not see it since we chose the snorkel excursion.
Hope this is of some help to you. I'm sure that someone else on this site has been on this excursion and give you their point of view also.