Interesting. Have you had consistent success guesting Y ticket holders into Al Mourjan using your guest passes?

The T&Cs for Gold and Platinum members guesting into lounges includes "Passengers will not be granted access to Premium Lounges unless they hold a Premium Ticket". And for using the guest vouchers includes "Access to Premium Lounges is granted upon presentation of a Premium Ticket".

https://www.qatarairways.com/en-qa/P..._benefits.html

If they are consistently allowing Y passengers in now despite these limitations it might help explain why the AM lounges are always so busy these days...