1. Do the FSDs provide any way to adjust ride height? I'm not looking to lower the car, just adjust it to factory specifications. Possibly, I'd even raise it just a bit to get some more clearance on speed bumps.
The KONI FSD shocks are an OEM replacement. You can reuse your factory springs or aftermarket lowering springs with them. You do not have the ability to adjust the height and that is something that you would get with a coilover system.
2. Does the car need to be aligned after I replace the struts, assuming no other changes are made?
Yes, an alignment is recommended when replacing the shocks.
3. Does the car need to be aligned after I adjust the ride height?
Replacing the shocks does not affect the height of the car. If you have coilovers and adjust the height, then an alignment would be recommended.