My BF and I are booked for free dining in Sept. My dad is going to join us for at least a few days but due to work and some other things, he probably won't know how long he can join us for until July. So my question is, when I book my ADRs in June and book them for three people, what happens if dad doesn't end up coming? Can I just call and switch it to 2 people or do I have to cancel the ADR and rebook? Also, same situation but with 4 people (my sister also might be joining us for a few days...she lives in FL).
TIA!
TIA!