You would need to talk to the club staff about your request
Are you planning to have them come to the club after the food offering periods are over?
If so, don’t think they would deny you giving your parents a quick tour of the lounge
But do know I am not speaking for them but I was allowed to have a friend come see the lounge set up at a time most were in the parks
If club rooms are completely filled, staff has to first provide for the number of guests booked at club level during the morning breakfast, dinner and dessert periods
You can call the club lounge and discuss it
When you book club level, you are sent a welcome email weeks in advance
They will list their direct phone number so you can contact them in advance with your questions and needs