If you're visiting Club 33 in the next few weeks, don't be too surprised if the club is wrapped in canvas and scaffolding.
Apparently there is quite extensive construction in progress on the building's roof and safety is Disney's first concern. While the work is being completed, the Club 33 balconies will remain closed and balcony access will not be allowed.
Refurbishments such as this are quite common within the park during the Winter months when park attendance is decreased.
When Summer rolls around the park is painted, polished, and ready to dispense Pixie Dust only as Disney can!