Just a little something to bear in mind. Wheelchair bookings are completely flexible and can be changed free of charge. If there is availaibilty, even in Standard Premier, you could ask to rebook on an earlier departure.

The only difference is that in SP you get a cold meal and limited drinks compared to BP. You could get your folks to arrive a few hours earlier for the sake of spending several hours in the lounge, a hot meal and free champagne. The seating arrangements are identical in both classes.