Well, I just about got it right last year, so here is my guess.
5 weeks
Based on nothing more than the theory, that it is the least they can get away without giving employees a proper pay rise.
Of course the usual scales will apply
Cabin Crew 1/2 share (basic pay only, to dumb to realise it
)
Flight Deck 1 x share (until next year onwards when pph kicks in fully)
VP's 2 x share
SVP's 4-5 x share
EVP's & above, who knows the limits