The full details on Foreign and Commonwealth Office's travel advice for Italy is as follows:
Pre-planned Strikes -
31 May 24 hours local public transport
6 June 10.00 - 16.00 Pilots Italian Union strike
6 June 10.00 - 18.00 Air Traffic Control "
16 June 10.00 - 18.00 Air Traffic Control
26 June 12.30 - 16.30 Alitalia Pilots
7 July 12.00 - 16.00 Rome Air Traffic Control
Having spoken to Alitalia it seems that this will not be definite until 72 prior to flights.
For me that would be too late and leave no time for alternative arrangements. At that stage it would be very difficult to get a flight so for peace of mind I have changed my flight to previous day and am now flying to Linate and staying overnight. It is extra expense but worth it to know that there shouldn't be any mishaps! !
I will now be travelling with the others and not the

so long as ther's room on their coach - must contact MSC to confirm ok.