I'm Australian and have been to exactly 1 open casket.
Soap box while I'm here: bodies do NOT need to be embalmed to have a viewing or open casket. If a funeral home is saying it's 'policy' to embalm for a viewing it is 99.9% of the time an internal/company policy and NOT a matter of law. Bodies kept cool without embalming are not stinky, discoloured, or dangerous, or any of the other reasons a funeral home will try to push for embalming. Yes there are exceptions, but they are few and they should all be explained to you in detail and you still have a choice! Prep methods for viewing (to keep eyes and mouth closed) can be done without embalming. You can take the body to a different funeral home at any point, so if you do end up at one refusing a viewing unless they're embalmed you really can go elsewhere. You also don't need a funeral home to have a viewing; you can do it at home as was custom (for ...millenia, I assume) until recently.
Soap box while I'm here: bodies do NOT need to be embalmed to have a viewing or open casket. If a funeral home is saying it's 'policy' to embalm for a viewing it is 99.9% of the time an internal/company policy and NOT a matter of law. Bodies kept cool without embalming are not stinky, discoloured, or dangerous, or any of the other reasons a funeral home will try to push for embalming. Yes there are exceptions, but they are few and they should all be explained to you in detail and you still have a choice! Prep methods for viewing (to keep eyes and mouth closed) can be done without embalming. You can take the body to a different funeral home at any point, so if you do end up at one refusing a viewing unless they're embalmed you really can go elsewhere. You also don't need a funeral home to have a viewing; you can do it at home as was custom (for ...millenia, I assume) until recently.