Well … it does depend on your customers …
I’m a newbie to Casinos / Poker … but have done a lot of promotion for BET365 a solid Euro sports book. Their stats show profits by source and it does change markedly at this time of the year (summer holidays) for European clients …
Here is my 5 month summary.
May … Huge for sports. OK for Casino. A little bit of poker.
June .. Quiet everywhere.
July … Big for poker
Aug … Huge for Casino / Sports. Good for Poker
Sep … Huge for Casino / Sports. Where did my poker players go ???
Poker specifically :
M 94.26
J 27.29
J 778.60 :woohoo:
A 190.66 :Nod:
S 1.92 
And that’s with over 440 registrations and 180 active customers.
So some seasonal variation is plausible …