I run an in-home preschool with 3-5 year olds and I don't do any worksheets. Part of my job is setting expectations with parents about what's appropriate with this age group and you can do this too. As PP mentioned, they are learning a ton with all activities. I do plan plenty of activities, though, they are all hands on. Kids leave here knowing what they need for kindergarten and neither they nor I need to trudge through worksheets or activities that makes us miserable. I also do a very small write up about the activities that we did that day, like today's said,
Shaving cream
Letter hunt
Outdoor games
That's all (it's a 3-hour program). Of course, we also sing songs and read books daily. We have tons of free play inside and outside as well. Don't feel like you have to do worksheets to please parents there are other ways to please them.
