Originally Posted by dsgtc0408

Not sure about the roller bag but on the signup time, the website suggests at least one hour in advance http://www.yoursingapore.com/content...r-transit.html

The real question is what time the staff for the tour get to the T3 Transit Lounge B. Considering the last tour leaves at 6:30PM, the staff might leave around that time. My suggestion is that you might consider going to the Transit Lounge as soon as you touch down to ask your questions. There's no way to know what gate your inbound flight will go to but if it goes to Terminal 3 and parks at one of the B gates, you'll pass Transit Lounge B after gate B1 as you make your way to the Silver Kris lounge. If the tour staff is not around, go to any of the Information counters to ask what time the tour staff will be at Transit Lounge B.