We just got back from a weeklong liveaboard from sharm.
The prongs on the boat were two round ones. You will need the adapter to go from us 2/3 prongs to the boats two prong sockets. We used the charger below with a separate two prong adapter for our equipment. It has a one high amp usb, one low amp usb, and three three prong us sockets.
We were not allowed inside the boat with wet clothes. We could not wear shoes on the inside either.
Option one was to change from dry clothes to a semi dry swimsuit each dive. There was a two hour surface interval between dives, so our wet clothes were not quite dry between dives. I kept my dry clothes in a dry bag during the dive.
Option two is to alternate three swim suits. So you always have one dry one, one moist one, and one wet one. That minimizes changes.
We only had two outside heads to change in, so option 2 worked better for me, since one lady always took a long time to change.
Shower off your wetsuit and swimsuit with the fresh water deck shower after each dive so your things dry faster. Stick them on the unshaded upper deck if you want them to dry really quickly.
Bring at least one pair of neoprene socks to prevent blisters.
They only have one, two, and three kg weights, so you cannot get as precise weighting as you can with one pound increment weights. So, you may have to carry more weight than normal and your trim is more difficult to determine.
The water below the surface is much colder than quoted temperatures. I needed to use a 5mm.
Buy or make sure your boat has entocid for mummy tummy (explosive diarrhea). It works better than antinal. Pick up something called hydro salts if you are susceptible to cramps. You can get that all at any Egyptian pharmacy.
Bring lots of cash including small denominations. Egyptian business don’t take many credit cards.