If they use fords new oil it can probably go to the full 5K before changing, or even farther, since it's semi-syn. Depends on your driving profile.
If it's not wearing tires funny and handles "like it's supposed to" there's no reason to mess with alignment.
No. Ford has specifically stated that if you are not opening the system to constantly add fluid due to leaks or whatever that there is no need for flushes other then during normal pad/disk servicing.
Even with a claimed 100K interval it's MHO that you'd be better off getting it flushed every 50K or even more often if you do a lot of severe service. But you don't need it now.
I doubt they will do anything you wouldn't unless they actually have a cap tester and also pressurize your system and see if it leaks down. I doubt they'll be doing that for $6.30.
THis is one of the few things I've let the dealer do because I've been totally unsuccessful at breaking the connectors loose and it's so hard to get to without a lift (on my 92). I've tried 3 different styles of "tools" and none of them unsnapped the darn connectors.
They are going to turn your steering wheel back and forth and see if it feels "loose".
A bargain compared to laying under the vehicle and doing it yourself if they really catch all of the few places that should be lubed.
Owners manual should list it.
If you aren't having drivability problems you don't need them doing this. YOu should not need to use FI cleaner every 3K miles. Every 5 to 10K as preventive maintenance should be plenty since all fuel comes with a federally mandated FI cleaner already in it that is adequate for cars that have no defects in the emissions systems and that performed as intended. That said, there are a few cars that passed the test for certification but still need more FI cleaner then the minimum.
It should mean they do a load test and clean the terminals.