Worth checking with the property directly via email or with the Hyatt Twitter rep / your concierge.

I would guess that it's not included, in the same way that you wouldn't get breakfast included (as standard) on day of check in if you were to check into a stay super early You might get lucky / the rate may be generous enough to include this - in which case it could be better value to book an office for the day vs. paying for breakfast for 2 people at a local restaurant!