If there’s one spirit that most of us associate with the warmer seasons, it’s rum. That’s because most of it is produced in the tropical island climates we spend all winter longing for around here. While we can’t necessarily transport ourselves to the Caribbean or Latin America on a whim, a trip to RumBa at the InterContinental Hotel offers a more cost-effective — and immediate — fix. With the opening of their summer patio season right around the corner —and a recent expansion of the waterfront fixture just completed — now seems like as good a time as any to set sail on the molasses seas.