@SlicerDicer #Nitrox is such a relief that almost all bases and ships I can recommend cuz I know them offer "#FreeNitrox (32%)" for certified divers as upgrade, and the #BlieSeas in Egypt does Nx28 for free unless one's not having certicification or explicitly doesn't want it.

But granted, they won't let people dive on their tours if they didn't have an AOWD-equivalent & boat diving experience logged anyway.