Been at work for 12 hrs; quick scan saw the Unibet calendar offer. Deposited £35 and did £1.20 spins. Hit the bonus round & then hit 2 more in that bonus round. Hit £300 in total. Played on at £2.40 spins just to get the free bet and hit another £100. So, deposited £35, withdrew £435. Big thanks to Dazed1979 for telling me how to opt in otherwise I would have probably gave it a miss.