Official Rules

Eligibility

No purchase necessary.
Must be 18 years of age or older.
Must be the homeowner.
Home must be within Granite Galleria's service area.
One entry per household.
Employees and immediate family members of Granite Galleria and She Shed Photography are not eligible.

Includes selected granite or quartz countertop material up to the stated square footage.
Includes design consultation, digital templating, fabrication, one standard sink cutout, one standard stainless steel sink, and professional installation.
Does not include demolition/removal of existing countertops, plumbing, electrical work, backsplash, cabinet modifications, flooring, painting, permits, or additional remodeling work.
Winner may upgrade materials or add additional work at their own expense.

This is the one area I'd change from our earlier discussion. Since you want it to feel more like Colonial Marble's promotion, I'd make it objective:

One eligible entry will be selected at random from all qualified entries received during the giveaway period.

That's cleaner and more in line with a traditional giveaway. It also avoids people wondering why one story was chosen over another.

By accepting the prize, the winner agrees that Granite Galleria may photograph and/or video the project before, during, and after installation and use those images for marketing and social media.