We just did it this past week. I had a choice for my selected date between premium tickets or prime tickets with lounge for $5 less and a couple of rows back, so I took the lounge experience. The seats were still very good. Regular prime tickets were not available on my date, but the website showed they are $95 cheaper without the lounge. So it's $190 for the lounge experience that includes both part one and part two of the play.
The tickets do not indicate that you have the lounge experience, but when they scan your ticket, the staff will let you know that you do and where to go.
The lounge is located downstairs to the left of the restrooms. You gave the staff member your reservation name and they let you in and gave you your souvenir brochure. This souvenir is not a lounge exclusive, it's the same one sold in the gift shop for $20. You can see it on the cursedchildstore website under books. You only get one souvenir for each ticket, you don't get a second souvenir when seeing part two of the play.
Inside the lounge is seating with small tables. Each table has seating for the number in your party, so you don't have to share a table with others, though the seating is close to others if you want to mingle.
You get one complimentary drink when you enter for each part, with some exclusions (the hostess showed us three liquors that are not included, but I never asked what they were) but it is not complimentary after intermission.
They had a small hors d'oeuvres section. There were some changes between each part and intermissions of what was offered.
The host and hostess were very nice and made sure to talk with each guest and answer questions that you might have.
There are two unisex bathrooms reserved for the lounge guests, but just before show start, and at intermission you still had to wait.
Is it worth it? That of course is for each individual to decide. I hope I gave you some insight to make that decision for yourself.
JB