Bottle of water it is. Jim's smile relaxes into something easier again at that quiet, grateful smile. Something about kids especially at this age always catch his attention whether he means for them to or not. It wasn't ever a thing in the Academy or on the ship but now that Jim's stationed on Yorktown he's gotten to meet all kind of civilians and their families. He's babysat Demora Sulu for his pilot's date nights with his husband more than a handful of times now. He likes her and he likes Alex.

"Space? It's--" Everything Jim has ever wanted. The unknown, the freedom, the thrill of an adventure and the hunger for knowledge all sated by this big open void. He misses it so much it's a sickness. Jim's smile is brighter than it's been before. "It's the only place I ever want to be, these days. You get used to the artificial gravity and most of your food and drink being replicated rather than fresh. Small price to pay to get to work out in the Black. Have you ever been on a plane before?"

Impossible to tell just by Alex's clothes, but Jim's guessing shuttles and transport stations aren't the way folks get around in Alex's world just yet.