Rain can make the final photos look less appealing to potential buyers and renters, so you have the option to reschedule at no cost if needed.
If you choose to go ahead with the shoot when it is raining, outdoor photos and drone photos may be impossible to capture.  If that is the case, we can reschedule the entire shoot at no cost.  Or I can return to capture the exterior photos (there will be a return visit fee for the extra time and travel).