We sailed on Edge in a PH when cruising resumed. We had a great time but there were only 900 guests onboard. The only time Luminae was crowded was the last night, don't know why we just didn't go to a specialty that night.
We liked the PH except for the balcony. It's long and narrow which made it awkward when we had some people in for a party. The overhang did not bother us.
Service was great throughout the ship, we tried all the specialty restaurants. Our butler served us a off menu Indonesian meal in our suite, at his suggestion.
The Retreat Lounge did not seem very intimate. We didn't use the sun deck much.
Edge compared favorably with the S class ships so we are open to booking either S or E class depending on price and what we perceive as value.
I think you will like your experience.