The length of time shouldn’t matter much if you stick with lightweight Christmas lights and similar decorations. Those shouldn’t pose risks to your stucco. You should avoid attaching anything to your stucco that could fall because it’s too heavy, which may take part of the stucco with it. Some methods, like using double-sided tape or adhesive hooks, will naturally wear out over time and lead to falling lights, so don’t expect to leave these lights up year-round.

The average cost to repair stucco is about $1,600, with projects ranging from $250 for minor fixes to $6,700 for extensive work. The price is often calculated per square foot, typically costing between $60 and $120. Some professionals may charge an hourly rate of $40 to $50. The final cost depends on the extent of the damage, the type of stucco, your home's location, and whether there is underlying damage that also needs to be addressed.

Costs for specific repairs vary:

• Cracks: $8–$20 per square foot

• Holes: $250–$450 per hole

• Water damage: $30–$50 per square foot

• Chimney repair: $60–$120 per square foot

• Recoating: $4–$5 per square foot

While you may be able to patch small cracks yourself, it is recommended to call a professional for major repairs to ensure the job is done correctly.

The curing time for stucco typically takes several weeks to fully complete. During the curing process, the stucco undergoes a chemical reaction and gradually hardens. It's important to note that curing is different from drying. While the surface of the stucco may dry relatively quickly within a few hours or days, the curing process continues beneath the surface, strengthening and solidifying the stucco. 

It's best to avoid excessive moisture exposure during the curing period, as it can impede the curing process. The exact curing time can vary based on factors such as temperature, humidity, and the specific stucco mixture used.

It’s not advisable to use CLR on stucco. CLR is a powerful acidic cleaner designed for removing tough mineral stains. Stucco is a porous material commonly made of cement, lime, and sand. The acidic nature of CLR can potentially damage or etch the stucco surface, leading to discoloration or deterioration. 

It is best to use cleaning solutions specifically formulated for stucco or mild household cleaners mixed with water to clean stucco siding. Always test any cleaning product in a small, inconspicuous area before applying it to the entire stucco surface.