Originally Posted by seenitall

The analogy to the family situation is as follows. Suppose you break your leg and are put in a cast that does not permit you to sit in a E- seat without your leg protruding into the aisle. The flight is full. Is UA now required to move you to E+ and bump an E+ pax back to E- ? Similarly with Passengers of Size. If they can't fit in their E seat and the E cabin is full, is UA required to bump a pax off to give the PoS two seats together? Unless you say "yes" to both of these situations, you cannot argue that UA was required to seat the family together.

These are situations where your solution is to buy E+, buy F or buy two E seats.