So have had 4 or 5 freespin rounds already starting out my stint with Livecasino and I know it's a really small sample, but seems to be that winnings in a session are either very low EV, or ridiculously high.

I already experienced this on previous freespin promos, but those were very staggered sessions, but here already I think I gathered about 20-40% of wager amount in my first few sessions... but the last two I finished yesterday gave me over 250% ($20x2 for a return of over $100).

P.S. "Bet drinking" huh? That's what happens when people use machine translation