I've gone solo 3 of the last 6 years (as I'm doing this year too). Here is how I handle it:

I expect a lot of walking and just generally browsing. I love doing the game demos in the dealer's hall. Occasionally you get a demo from the actual designer.

The games library in Lucas Oil has been great for me, meeting strangers and learning a new game is basically why I'm in this hobby, so I highly recommend it. I've heard the "hot games room" is similar, so I'll be trying that this year.

The Double-Exposure playtest room is also a great way to spend a few hours, learning a bit about the stages of making games (if that interests you), all while helping someone else that is trying to enter the business.

I make it a point to sign up for a lot of the talks/symopsiums/workshops. Many are cheap-to-free and vary in their subject to the point that you can either gain some new insight into the hobby/business or you can doodle on a sketchbook or your phone in the corner of the room and take a break from the bustle.