I've heard that they will only be looking after about 10 rows of customers in a separate cabin - I guess probably from doors 3 to doors 4 on the specially painted A321, as Monarch are selling seats as either Monarch service or Celebair service on their website.
So not exactly a hard one to work with lots of wanabee famous for 15 second chavvies. Like any airline related programme one can guarantee no doubt a whole bunch of continuity gaffes A321 suddenly morphs into a 757 etc, and as far as I'm aware from other docusoaps at other airlines and Monarch's holiday airline from 2001, producers will no doubt heavily stage a lot of it if it doesn't look good first time.
However I'm sure it will be interesting to watch and nit pick if nothing else, we shall see.