Imagine drifting off to sleep with the gentle sway of manta rays gliding past your tent window, the distant calls of dolphins echoing like a lullaby from the ocean's depths. If that sounds like a dream (pun intended), you're in luck, because the Singapore Oceanarium is bringing back its wildly popular Ocean Dreams  experience just in time for the holiday season. This exclusive 2 Days 1 Night (2D1N) glamping getaway combines luxury under the stars. Or rather, under the sea,