Will My EC2 Instance Be Deleted If My Account Is Suspended Due to Non-Payment?

It's not likely your instance will be deleted immediately. AWS isn't really out to punish you; they just need to receive payment. Once you settle your bill, you should be able to access everything without issues.

Generally, AWS keeps your resources for up to 90 days during a suspension. So, your EC2 instance should still be there when you pay again. Just make sure to check AWS's latest policies. They often update their rules, so it's a good idea to verify in the documentation.