Thank you Sue. Very helpful. This will be our first time staying at POR and using the boats. Glad to hear there are busses to Disney Springs
You will fall in love with POR - (and POFQ as well) those are some of my most favorite places in the world!

I use an
ECV, and as
@SueM in MN said, you'll have no problems with the boats, unless it's stormy or too windy.
Remember you will use the MARKETPLACE docks at the far end of Disney Springs - but there is a water taxi system that can take you between the three docks. If you love the boats as much as we do, you may decide to float on over to OKW for a meal at Olivia's - that boat will depart from the middle dock, or THE LANDING. The third dock is called WEST SIDE, and it is down by House of Blues.
The boats also have a weird little schedule where they run an internal (between POR and POFQ) shuttle - it's almost not worth the bother, as by the time you wait for the boat, board the boat, ride the boat and disembark, you could have walked there... twice LOL.
When we stayed at POFQ in April/May of this year, those boats started running a loop that went POR->POFQ->Disney Springs MARKETPLACE->POFQ->POR at 10:00 am. At 11:00 am a second boat started on the river, and at that point the two boats were always at (roughly) opposite points on the same loop.
It is important to remember that the last boats depart from MARKETPLACE at 11:00 pm. The water taxis will run until later, if I remember correctly. The last bus departs Disney Springs for all Resorts at 2:00 am.