The USMC Harriers always enjoyed their time embarked on the Invincible, Illustrious and Ark Royal. The fact they could drink on board helped
An MOU was always in place, even for exercises, so no drama, no fuss, all very normal.
The USMC fit very well alongside the RN and working closely with each other on F-35 as well as having RN pilots flying on USMC Harrier and USN Hornet squadrons only strengthens the ties.
I'll stop with the facts now....