I have not heard the "Red Tent" term before, we usually refer to "Aunt Flo" or a "visit by the aunt" or "monthly visitor".
Some guys are ok with playing in "The Red Tent", some seek it out, but most prefer to be told and stay away.
Some girls play during this time while fully disclosing the situation. Others use a type of device informally called a 'cup' (can't recall the actual name) that goes in there and does a pretty good job of hiding any 'effects'...but if you do not have a deep 'canal' this may not be an option.
Other girls offer non-FS sessions during this time, like BJ or massage/light touch with HJ or BJ.
Enjoy your stay in the Red Tent, Malaya.