We had a lunch reservation for 4 once, and they tried to seat us at the bar. That would have been ok (not optimal since having a conversation down a bar is difficult for a party of 4), but two of our party were our DDs (ages 16 and 14 at the time). When they started walking us to the bar, I asked if they were allowed to sit at the bar. They looked alarmed and said “NO!”. In that case, I wish that you could specify the composition of your party when checking in for your reservation on the app (they do ask adults and kids, but “kids” are only 10 and under at Disney, so our party is 4 “adults”). We were moved to a table, but the inside server seemed a little miffed. Maybe she was upset that the person checking us in upstairs didn’t indicate there were teens in the party?
All that is to say that I think it is easiest to get a bar seat, rather than a table at LL due to many families that have kids and therefore must sit at a table.
I would keep looking for a reservation because sometimes they don’t offer walk ups or the walk up list says it is full. Many people cancel even the day of, since the new policy allows that, so you hopefully can get something. There are free dining alert sites you can sign up for also. Have fun!