It probably showed a lot about his opinion of the crew that his first idea is that all of the crew--the bridge, the core--in one room would lead to raucous drinking, questionable sexual maneuvers, and horrible singing, and that maybe he should withdraw his obligation from attending as soon as possible. He had already eaten two strawberries under a mere offer from Jim, and he knows for a fact that a certain Risan bar offers a melted dark chocolate drink topped with native fruit and something else he arched an eyebrow at. It wasn't that he didn't trust himself. He didn't trust Jim (or even Nyota, if she was in a mischievous mood).

"I suppose." It's the least he can say to hide his personal apprehension.