Yes when it is not bizzy in reatale or not bizzy
Sometimes depends on the time of year, Halloween is the big time of year for them so count on no Family Life from August to November
They are flexible as in no set shift (except for sorting in the back or long term employees). But they also schedule you for the least number of hours they can.
The majority of the part time staff are students and management is very good at working around and accommodating to the employee.