Sunday afternoon update from today: We arrived at Schiphol dead on 4h before departure and saw the queue snaking all the way through the tent (so I guess 3-4h line?). We're a family of 5 (Gold, silver and young kids having 3x Bronze). We went to the premium security entrance behind 25 (as per all the great advice in this thread and others) and asked if all 5 of us could go through there. The staff let us through without any issues. We took a right and joined the 'economy + premium' queue. They let you up in batches so we waited there for 5 minutes. Once up the stairs, we took a sharp right to the premium security line which was empty (economy was obviously). The lady guarding the entrance look at (mainly my gold) BPs and let us through without any issues. We were through all security in 15 minutes. Passport control line was same for all, but moved quickly and we were through in another 15 mins. So bang on 30 minutes in total.