We have a few mysql instances where we only need them for a few days a month (maybe a week). Because a stopped instance will start automatically after 7 days we delete the instance and do a final snapshot.

When we restore we have to go through the process of configuring a new instance from that snapshot. Where you have to select the security group, availability zone, set it to not public (which btw revert to yes once you select some availability zone) etc.

This process is rather error prone and honestly annoying if you do it multiple times.