Last year I was in Afghanistan, and the only lodge there was Oklahoma PH. I emailed my (Texas) Grand Secretary and asked about it (Texas Regular and PH now recognize each other, and allow communication, but last I heard, still require writing a letter to get approval from the lodge you want to vist, and it's routed through both Grand Lodges, and, and, and...... ). He said no, still can't since it isn't Texas PH (the only one we had the agreement with). That was early 2016. I would check with your own Grand Lodge to make sure before going to visit it just to be safe.