How to connect via point-and-click Graphical User Interface (GUI)
If you want a full point and click interface to control programs with your mouse, you can use a VNC client. One supported by native AWS and recommended is DVC, instructions here:
https://docs.aws.amazon.com/dcv/latest/adminguide/setting-up-installing-linux.html
How to copy data to and from RDS
You can use the usual methods to copy to and from your RDS drive as you would from any off-network location.
You can mount your RCOS drive on your image using a tool like sshfs:
sudo apt install sshfs
mkdir /home/ubuntu/myRDS
sshfs unikey@rcos.sydney.edu.au:/rds/PRJ-yourproject /home/ubuntu/myRDS
Done! Note: there is cost (~$0.15/GB) for copying data TO your RDS drive (data egress). Copy data from your RDS is free (data ingress).
Can I use an S3 bucket for storage.
Yes! If you want to keep your data in the AWS cloud, you can add and use S3 storage as required.