Originally Posted by
mahasamatman
Yes.
Not true. They may not like it, but you can get in if you insist. Though with the NZ lounge next door, there's little reason to use the SKL (except that it's usually empty).
Before UA moved to the NZ lounge I saw Annie at the RCC turn away SQ card holders any number of times when they tried to enter together with UA pax. I don't know if it was Annie's rules or UA's, but she said lounge access with UA in SYD was restricted to UA pax...