If you miss a FP do to medical problem go talk to a CM I find the GR CM the ones at the FP kiosk to be really good if you explain your need to them I had one set al my FP to any time FP for my trip so that I did not have to worry about missing a time, but yes I miss my FP all the time too I have a hard time going up to people to explain my need when I am in an over crowded area.
I want to make sure that everyone understands this would be an extremely rare situation and it is not the norm. It is way more then would be required/expected by the ADA, so is very unlikely to happen and people should not expect it.
This is probably a little bit true of us, too.
When the FP changed, i really thought a DAS might be necessary and planned to see how things went. However, after experiencing the days where he might have benefited from it, I wasn't sure what to do about it and since it was just a few times we didn't even ask.
If we miss a FP window, what would the DAS do? Allow us to enter the FP line even if we're late or give us a new window time?
The accommodation provided by DAS is the ability to wait outside of the regular line.
It is basically a Fastpass with the start of the window determined by the current wait time in the regular line.There is no end time to the window like Fastpasses have - it can be used until the end of the day (or until the attraction closes, if that attraction closes before the park closes).
Guests using DAS can only have one active DAS Return Time at a time and can't get another until they have used or cancelled the first DAS time.
Live shows are an exception to the window not ending; they have a beginning and end time since the DAS is for a specific showing (this would include things like Festival of the Lion King, Finding Nemo, Frozen Singalong, and Indiana Jones Stunt Show).
DAS might do nothing if you miss your regular Fastpass window. Whether the CM would allow guests with expired FP to enter the line anyway might depend on a lot of things - like how long past the time you are, whether the FP line is backed up, how long the regular wait is, how popular the attraction is, the type of attraction/capacity of the attraction , whether the attraction was down for a while, etc.
Whether or not the guest has DAS might not make any difference in whether the CM 'spreads a little pixie dust' and allows the guests in after the FP is expired.
If you miss your FP window, using DAS would allow you to make a DAS Return Time for that attraction (i. e. get a new window time) as long as you don't already have an active DAS time.