Your best bet is to use mytime self-service and ask for those days off, depending on your store your ETL usually has to approve it but your HR can help. I know people who get every Sunday off (Seahawks ticket holders) by putting in the request on MyTime and having HR pester the ETL to deny/accept the time off. Many ETL's don't want to deal with it and say just approve it.
Swap shift is good, but call outs can be troublesome.