Surprised that the Sheraton lets you in, as they definitely need ID or a passport to get in....regardless of how old you look.

So, where can you go? Theoretically, anywhere which is classed as a restaurant will not require ID.

The Belgium Bar at the Intercon doesn't need ID, but I have seen them ask people who look underage. Paloma and Lava are a no go, ID required.

Piano Bar at Movenpick al salata should be fine.

Sure there are others, but that should get you started! I've always thought it would be tough to be in that 15-20 age bracket here, recalling those years back in London, they were a LOT of fun!!!