I keep all my frozen milk in ziplocks in an attempt to prevent contamination! :)
You can further put them in a air tight container, should be fine this way :)
If the breastmilk is sealed then its okay to keep it like that.
I think it's fine. If you are scare, can keep inside ziploc bag
That's fine, as long as the BM is in a sealed container.
Yup its ok
Yes