A domestic flight on United that I just booked for December looks to be pretty full. The only seat assignments available online for me (non-status member) are 2 middle seats (in different rows) near the back of the plane. Should I park myself in those 2 seats for my husband and I? Or should I wait until closer to the departure date to see if I can get assigned seats together? Or will I have a better chance on the day of departure? I'd like to sit with my husband if possible. Thanks in advance!