Hi Steve,
If you have an RHEL subscription, do you have access to manually download the RPMs?
Yes, if you have registered one (or more) of the subscriptions towards an RHN account, you can download them by logging in to https://rhn.redhat.com
Alternatively you can build a script that does that for you. I used to work at a company that used this and maintained their own internal apt server.
We would prefer to deploy upgrades using apt instead of up2date, for consistency, but we need to know whether we can even do that on RHEL.
No problem whatsoever.
With regards,
Taco Scargo