Your experience with the Supperclub begins when you walk up to the door on Roelensteeg, a tiny alley off Nieuwezijds Voorburgwal a block or two southwest of Dam Square. (http://www.supperclub.nl/)
Ring the bell and you will be greeted at the door by a hostess who will direct you downstairs to the lounge. There, you can order a drink and slip into a room with contstantly changing mood-lighting where the patrons wait in a number of large, u-shaped booths and pulsating techno music provides the theme. Yes, it's true that your reservation was for 8 p.m. and you arrived to 7:30 p.m. to provide time for a drink, but time is not something that people at the Supperclub are really slavish about. Around 8:20 p.m., people start filtering out of the lounge and up to the dining room. (On the way, you may note the two, identical bathrooms which are marked "Hetero" and "Homo").
Like everything else about this place, the dining room is unique. It is a large, two-story room. The walls are lined with mattresses and pillows along the two long walls -- all nicely sheeted and cased, by the way. The mezzanine is set up the same way as the main floor. (If you can, you might try to talk the staff into putting you in a corner, which is very nice indeed!).
There are small, short-legged stainless steel tables with candles which provide an amazingly stable platform to hold your drinks (of which you may have a few). The staff is attentive and funky, with the whole thing perhaps reminding you of having an elegant dinner in bed.
A few entertainers -- (my companions told me they were female impersonators but I was never really sure) -- do a little lip-syncing to focus the crowd on an occasion or two, but mostly, people are left to their own devices. You will perhaps catch a whiff of pot in the air. It's not provided or sold at the Supperclub, but there is a coffee shop that certainly prepares for the evening's guests across the street. Supperclub patrons regularly pick up supplies while the doorman lets them in and out with a disinterested, "none-of-my-business" look.
Dinner itself is a five course meal and we found everything to be very well prepared and presented. The Supperclub has a fixed price menu in the neighborhood of 60 Euros and you will be having whatever they are preparing that evening, although there is a vegetarian option. (Our main course was seared tuna and it was awesome, as was the salad, soup, veggies and a wonderful sorbet-based dessert). That price doesn't include drinks or a gratuity.
The Supperclub is fun, Hedonistic and very entertaining for people who can go with an open mind and want to have a truly unique experience.