Working Weekends

So one of the perks I enjoy about private duty is having a flexible schedule, and usually that involved not working weekends or holidays if I didn't want to. I just started back on at an agency I worked with a while back, the openings they had were for wed, thur, sat, I told them I could do that for the rest of this month but every Saturday wouldn't work for me. Who wants to work every Saturday night?! Not this girl! The client's schedule really isn't that flexible so I'll probably have to drop Saturday and pick up a day somewhere else that has an opening during the week. I was just curious what everyone else's schedules were like. Do you work weekends, or every other weekends, is it mandatory, or are they pretty understanding with giving you a schedule that works for your needs? Do they give you a hard time if you take off on Holidays or is that pretty well understood too? Just being curious, Thanks!