Hi all. I have a friend who is going to fly CDG-SIN with me in April, just wondering if I could bring him as a guest into the lounge at 2E? I'm holding the silver elite card and I have enough points to pay for 2 but im not sure if they'll allow that?

ps. what are the odds of premium voyager getting a bump in to business class? sometimes I see passengers moving from voyager class into premium voyager, how'd they get the free upgrade?