Ivan awakes in some formal but non-military get up.
The outfit's really not the first thing on his mind! The first thing on his mind is that he has to leap to his feet and resume attempting to foil the assassin! The second thing on his mind is that this was probably a dumb thing to do because he's probably in the hospital recovering from life-threatening injuries! The third thing on his mind is that this doesn't really look like either of those situations, a holistic impression which does admittedly take the threads into account. ...he doesn't own this outfit. He considered buying something very much like this outfit but settled on the blue one instead; he busts the blue one out for situations like "girlfriend needs a plus one to a wedding and wants her plus one to look excitingly foreign". Also he thinks the one in the store didn't fit this well.
...he goes out the door to see if that's enlightening.
"The format is that everybody comes out one at a time, gets a few minutes to introduce themself to the bach, and goes inside. Once everyone's there, you'll all get to mingle for a few hours until he decides who's staying till next week and who's going home in a Rose Ceremony where he passes out meaningful flowers."
"If I have ever been from a 2009, it's been long enough that I don't strongly expect that to affect me in any meaningful way. And I've visited plenty of 2009s - it's a big multiverse - though it's not really the same when they've been connected to a larger society."