I have access to the sapphire lounges through my credit card, but rarely am I at an airport long enough or in the right place to use them.
But about a year ago, I had a 4 hour + layover in an airport with one and I was actually in the right terminal. So I go over to use it... and they said.. 2 hour wait to get in! I am like! WTH! even with my long layover I didn’t have two hours to wait to even get in at that point. The whole thing is useless.
I noticed some of the lounges are beginning to make it more difficult and more expensive, hopefully that will do something to cut down on the wait times.