[Yep, royalty. And a queen, at that. Well, he's got this. He's totally got this. He snaps his heels together, spine straight, giving her a proper army salute.]
Sergeant James Barnes, your Majesty. 'S an honor to meet you. The hotels're this way, if you'll just follow me. [Don't worry Elsa, he wouldn't even presume to touch a royal, especially as she's behaving according to her status, and that means she expects to be treated according to it, too. He's just an army kid from Brooklyn, he's damn lucky to even be talking to a queen in the first place.]