So far this is not the font plugin issues. Because the font is working in every page as the setup you have done.
I am not sure, but as per your div layout, you are using menu widget in a sidebar and those sidebar is disabled in pages other than weddings. You wedding page is using sidebar-content layout where as other pages are using content layout.
So can you try this layout from your page edit section? I think they should be below the content editor area.
Please forgive me, if i misguided you. This is what i can suggest currently as per your url.