The challenges do not take into consideration what level I'm on and you can't delete them. I'm on level 33, ROC wants a lamp, feathers, jasmine and a fryingpan. I don't have any of them because I'm not far enough into the game. So, 4 out of the 5 categories won't work for me. It's terrible. The first regatta I completed I didn't get the 135 points for most of the challenges; because I could not delete the challenges I was not qualified for. I was stuck with lower numbers.