If salt water is burning your eyes, you need to swim in salt water more. It's merely a matter of getting used to it. Salt water hasn't burned my eyes in years.
Not likely, they'll likely be happy if you can do it at all. OTOH, you should be able to clear a fully flooded mask 3 or more times on a single breath.
Welcome to the world of low standards. We all have to prove ourselves because most instructors are teaching to inadequate standards. If standards actually meant certified divers actually knew how to dive, this silliness would disappear.
Practice diving 10 or 15 minutes without a mask at all. You'll soon be over the eye burning issue.
Does this mean if it takes me two breaths to clear and they think I should do it in one, they won't let me dive?
Not likely, they'll likely be happy if you can do it at all. OTOH, you should be able to clear a fully flooded mask 3 or more times on a single breath.
The other thing, although less important, is that if I am certified, and haven't given someone reason to distrust my abilities, and I'm not trying to do something questionable without supervision/training (like getting certified in the caribbean then wanting to go out in a kelp forest or dive in limited visibility, or use my OW cert to play wreck diver) then I should not need to prove myself to dive ops and divemasters.
Welcome to the world of low standards. We all have to prove ourselves because most instructors are teaching to inadequate standards. If standards actually meant certified divers actually knew how to dive, this silliness would disappear.
Practice diving 10 or 15 minutes without a mask at all. You'll soon be over the eye burning issue.