Just keep an eye out for an e-mail from Disney regarding "insufficient tickets" warning that your last day of FPs will be cancelled. SOME people who book FPs with their DAH ticket get this warning, although the exact reasons for who does/doesn't get it remain unclear. The same thing happens with other hard party tickets...
MNSSHP,
MVMCP, etc.
Here's a cut/paste from the MK DAH FAQ which touches on the topic:
FPs with a DAH Ticket
- FPs are not available during the DAH event, all rides are standby only.
- DAH tickets will allow for FP booking during regular park hours, so - if you have no other FPs booked that day - one could book FPs during with a DAH ticket during the regular park hours before the event.
- HOWEVER, there can be issues when doing this, as has been happening for some people with MNSSHP and MVMCP events since 2017. Booking FPs with DAH tickets in combination with certain trip details/configurations can potentially cause Disney's system to flag your account for insufficient ticket entitlements and you will receive a warning that your last day of FPs will be cancelled if you do not address the problem.
- Who and exactly why people get this warning remains elusive.
- Bottom line - if you choose to book FPs with your DAH ticket entitlement and you have FPs booked on other days with regular park admission - you have some potential risk of receiving this warning... so keep an eye out.
Hope that helps/answers your question.