Well I'm closer to 30 than 18, so that's not going to be an issue. It's just very weird.

As for OLCI, the system online shows both outbound and inbound open to check-in, but when I selected the inbound it gives me an error saying I need to check-in at the airport, so I was able to check-in for the outbound only. I'm not sure if that's due to the fact that SQ requires that the outbound be flown already or just that the inbound is actually not open for check-in hence the error message. The outbound is this Friday and the inbound is on Sunday.

Routing is SIN-HKG-SIN.