At POR the boat will pick up at the Marina just outside the food court. At POFQ it picks you up at the back of the resort.
If you are at POFQ - you are the 1st stop so you will make on stop at POR - total time about 30 minutes.
If you are at POR - it is about 15-20 minutes.
The 1st stop at DTD is Markeetplace and it drops you near Cap'n Jack's. There is also a stop at the West Side, but I am not 100% sure where that drops.