when i first started out i didnt want to work weekends due to family.
then got a few that wanted only saturdays, and now as always i work every saturday, not always full days, maybe 2 full ones then 1 half day and then one only for a few hours,
one thing i have noticed though you do tend to pick more up at weekends because people are in and see you and ask you.
but never work on a sunday.