Compare the actual system
Ask about waterborne, oil-based, or other proposed finish systems by product name. Discuss appearance, sheen, compatibility, ventilation, and future maintenance. A stain and a protective finish perform different jobs and may have different application requirements.
Get a return-to-use schedule
Ask separately when socks, normal shoes, pets, heavy furniture, rugs, and cleaning are allowed. Clarify the full-cure time and any site-condition requirements. The answer depends on the product, coat schedule, temperature, ventilation, and humidity.
Keep the care instructions
Save the product names and written instructions. Use the recommended cleaner and follow the moving-furniture guidance. Finishing a floor is the start of its maintenance plan; a compatible future recoat can depend on what has been applied since.