We tend to do 2+2 in 2 consecutive rows, but window and aisle - gambling the middle seats stay empty (you can always switch - no one wants to sit between you.). Consecutive rows actually makes it easier to communicate and pass treats back and forth (too hard across the aisle). Sometimes the kids (8 and 11) even decide they want to sit together, leaving DH and I wonderfully alone to pretend we're on a movie date.