After a schedule change from US Airways making my return flight from MCO-EWR much too late, I've decided to cancel that part of the itinerary and just book a one-way flight on UA for the return. The prices are so cheap right now for both F and Y so I'm considering getting F. I noticed that the flight 1727 (on 10/15) is on a 757-200 with the new lie-flat BusinessFirst seats, which I've never had the fortune to experience before and would like to. A more desirably timed flight (same price) is on an A320 but with no such seats. Are the odds low or high that the 757 might get swapped out for a non-international configured one (with 6 rows of standard domestic F seats as opposed to 4 rows of the BF)? Has anyone flown the EWR-MCO/MCO-EWR 757 routes that can comment? I'm definitely willing to spend the extra $ to try out the BF seats, but I'd more likely take the earlier flight and the cheap[er] Y seat if there's a high chance I won't be missing something special.