Hello, of course you can, because in the demo version you accumulate gaming experience, develop their own game tactics, includes intuition, and all this - the absolute pluses of the demo game. It resorted to even quite experienced players
https://bezdepozytu.com.pl/gry-kasynowe/blackjack-online/ , when online casinos appear new slot machines. So they get acquainted with the new slot, "probe" it, to play more confident. So feel free to go ahead, I recommend.