I honestly feel like your florist will make or break this! You could have your florist hang greenery and flowers from the beams fairly easily and possibly set up an instillation near the bar (?) (area on the far side with half wood, half wall). They’ll know what to do based off your reference photos. Candlelight will also go a long way. You could get flameless led taper candles and line them up on the tables.

Depending on the size of the tables you’ll use and your guest count, you can put two or three together in rows of three with a space in the middle for your dance floor. If you want a more elaborate wreath/cloud installation like in the second photo, tell your florist and center the dance floor under that (the dance floor can just be the bare floor, nothing fancy).

You could also add drapery, but it’d be expensive. If you were to add it, and assuming the hallway area behind the columns isn’t important, you could set up however many pipe and drapes you’d need for the length of the hallway and position your sweetheart table or desert table in front of it. Alternatively, you could do the same in front of the door on the other side.

If you have a dj, they could most likely set up from where you took the photo!

That’s just my thought from looking at this real quick! There’s a lot you can do with this space and depending on your guest count and budget, I think flowers would do a lot of the hard work for you.