No. They play 46 games contrary to 38 of Premier League. But yes, the league finishes a week before Premier League. Lots of match-cramming weeks.
I know nothing of Watford except that they almost beat Man City last week. What are PCY's prospects to become a starter? Watford seems to be a fairly high-scoring team - presumably they've got a scorer they trust in already. Is PCY just a backup? Did Wenger throw him at Watford in return for, like, a steak dinner?