IIRC the USMC are planned to deploy a Sqn full time until the UK has sufficient assets to do so.
While that would be good news for the FAA's refamiliarisation with proper aircraft, the USMC's long-proven ability to adapt, improvise and overcome any problems with achieving operational status from the new carrier might unfortunately mask 'contractual' issues between the builders and the MoD.
Although I can't see any USMC squadron boss being overly keen to suspend flight operations because the Brit suits are squabbling over some minor piece of administrivia...