IMO it would all depend on how you have worded this to cover yourself in your contracts with your current clients?

So for example for Xmas stats I have it worded as:

 I have been notified that the program is closed for the Christmas period as of my regular pick up time on December 23rd and reopens on the first business day after the New Year unless otherwise notified in writing. All statutory holidays payments are due during this closure period and any statutory holidays that take place on a weekend will be taken on a weekday in lieu. Provider will provide clients with a reminder of fees due leading up to the Christmas closure – all fees or posted dated cheques for fees are to be provided before the Christmas closure.
So yes I am paid for the 3 stat holidays during this period ... Christmas Day, Boxing Day and New Years Day.

I also have it worded elsewhere in my contract about 'other stats' ...

'Please note that if an observed statutory holiday falls on a Saturday or Sunday when the program is normally closed than the Monday will be taken off paid in lieu and regular program hours will resume on the Tuesday'
Payment for anytime CLIENTS are on vacation is due in full based on the space they have committed to ~ so this would also include any 'stats' that fall while they might be absent.