In my country there are unfortunately many dive boats that do not have a rinse tank (or easy access to unsalted water) and offer double dives packages. So you're stuck on a boat all morning or all afternoon, but no easy way to rinse your camera between dives (usually 1h surface interval).
Is this a big no or it doesn't really matter as long as I rinse it when I get back home?
Is this a big no or it doesn't really matter as long as I rinse it when I get back home?