Empress,

I'm sorry it took so long for me to reply but personal matters kept me from work for the last couple days.

There is nothing in the rules covering this situation but I did confer with co-workers and we feel that if A)a SE/EP can access the lounge at anytime and B)that a SE/EP can take a guest when they are travelling, that
A+B should equal C)a SE/EP can have a travelling guest join them in the MLL when they are not travelling.

Hope this helps..