In the haste of making my ADRs, I realized that I forgot to note dietary restrictions and a birthday on a couple of them. Is it possible to add that info to them at this point?
Yep - just call the ADR line (get a person) and ask them to add it to the reservation - had to retroactively do that for a couple of ADR's on my last trip.
Be sure to have your confirmation #'s handy - it makes things quicker.