Cut him some slack guys....
I'm all for full-disclosure but the fact is he left is Signature Line in the posting which should clearly indicate a possible bias.
Munchers are the best idea and they were available last time I was at SC
And drying in the air conditioned space will help, but you need to let the housing go back to ambient temp outside before your dive.
The last option is to use defog on the housing.... wipe it off lightly.
As a shore excursion you'll be well looked after.
The best thing I can suggest is to do some local diving and get comfortable at deeper depths. Consider taking a deep specialty class
Adv Nitrox is normally paired with Deco Procedures where the real benefits of higher O2 mixes show themselves. I highly recommend taking them together
As for equipment, doubles on the back and an 02 stage bottle are norms
Why do we over complicate everything?
Nitrox vs Air = reduced nitrogen loading period... irrespective of mix... irrespective of depth.
While it's possible to create a situation where per the tables you are "reverse profiling" it's not a large enough delta to stress over.
Getting "Air"...
It's an eight plus
The edge in his voice tells me he recognized his own screw ups
Mistakes happen and it certainly is a tip buster for the boat crew dive shop.
But the diver made big ones too if he failed to check his gear...
Did he check his inflator?
Check his SPG...
A1scuba may be able to assist you locating someone close for training.
The visually impaired certification will have restrictions that vary per agency so be sure to ask. My brother certified last summer with SSI, not only is he required to have 2 buddies but one needs to be instructor...
Best advice I was given when I started diving
"If you get a buddy that wants to compare consumption, or complains about you being an air-hog, get another buddy. After all you can always surface and get another tank."
With experience consumption will reduce and if that's not enough you can...
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