I'm flying in October with my adult daughter who decided to join me about 2 months after I bought my ticket.  I opted to purchase the WGA+ fare with EBCI since I really need an aisle seat near the front of the plane due to my anxiety/claustrophobia.  She is flying on a 
budget so she bought the WGA fare and doesn't really care where she sits, but obviously, we'd like to sit together.  She plans to check in right at the T-24 mark but she is still planning on getting a High-B, maybe even low-C assignment.  Has anyone ever encountered a problem with someone "saving" a middle seat???  I plan to board and sit in an aisle seat within the first 5-6 rows, but do you think that saving the middle seat will be an issue?  Would anyone really say, "I WANT that middle seat??"  I could see if there are 2 people that want the window/middle, but I would specifically target a row with an occupied window seat and ask if the person in the window seat is waiting for someone and then explain my situation.  Does this sound reasonable, or am I being too entitled?  I figure my daughter is going to end up in a middle seat anyways so I might as well try to save the one next to me.  Since it is the only nonstop flight of the day, I assume that it will be completely full.