Working for Ubuntu 12.04 LTS Section 1 and Section 2 with Level 1 and Level 2 for both.

In our circumstance I think we'll be ignoring this item.  With a limited user base, behind a secure environment, with no admins creating and leaving scripts floating around in spaces where this would be important it becomes far less relevant.  Further things like noexec on /tmp can have detrimental results on many different things like the installation of certain packages.

I found many references to people indicating that this was not recommended.  We'd have to maintain a manually created base AMI with a partitioned setup.  Further it would make auto-scaling the space requirements next to impossible. 

I included the items for completeness not for our use.