The truth was that a nice, steady relationship like the one he had with Sulu and Jack was doing wonders for him in terms of things like this. Because both of them were so comfortable in their own skins, and so assured that things like this, walking with his arm around Sulu's waist down the corridor of the Enterprise, they weren't so bad. That if someone saw them, it wouldn't matter. It was starting to rub off on him, and while he was sure that he'd never be okay with being openly forward in front of other people, this walking with his arm around Sulu's waist, bit? It was nice. So Ianto kept his hand right where he had it.

"Oh, I doubt it that we'll waste the whole time sleeping. Just for a little bit. I'll set an alarm. Wake you up, if that doesn't work for you too..." Maybe pull a few tricks out of Jack's bag if it came to that. Ianto'd slept through enough alarms (when they didn't matter) to be familiar with his tactics there, and all. And they would still be on vacation, then, so he could.