Rambutan in Phnom Penh is owned by the same Dutch/Thai gay couple who own Rambutan Siem Reap. I am only familiar with the Rambutan Phnom Penh, where no one would care if you showed up at breakfast with two companions. Rambutan PP, and perhaps also SR, discourages families with children under 15. I haven't seen children of any age during my last several visits there.