I don't think, when I was there they were refusing big groups, only a few guests were using the SM in 5 PM
Diving rate for Apo I paid 1050 pesos per dive in Apo with Easy diving (Thalatta), plus diving fee in the national park.
We spent 7 nights there last months and only good comments about this place: nice rooms, very good restaurant (sure one of the best in the area),...