PCA SDR

My 996 has developed a coolant leak somewhere around the reservoir. The bottom of the tank is dry to the touch (as best I can get my hand in there) but I can see a small amount of fluid near the junction of some of the hoses. A twenty mile drive yields the residue of 4-5 drops as it vaporizes on the left tailpipe. I will take the car in for service within the next week to ten days, but do you all have any other concerns as to the continued driving of it, providing my coolant level remains acceptable?
Thanks,
Jay