A:AnswerWell, this is 50 watts, so it would work with your flat iron (it didn't work with mine because mine used higher watts). You should use it alone with it though (not in conjunction with something else plugged into it) in my opinion.
A:AnswerYes it will. One of the country's that we recently visited had the same 3 pin configuration. You need only the top 2 pins for use and this adapter worked perfectly
A:AnswerYes on the straightener for a short period of time. Need to unplug after a short period or it will over heat. No for the hair dryer as it will run very fast for a short period before burning up. Most hotels or B&B have 220V hair dryers for use.
A:AnswerYes for charging phones. No on hair dryers. Most hotels, castles and B&B have hair dryers. Yes on curling irons but you need to unplug after a short period or it will over heat. We melted the tip on our first trip