I assume the plan is your daughter is eating somewhere else.
Our experience is LTT always seats 15-30 minutes behind the ADRs. But once you’re seated it’s reasonably quick. So I think you’ll be perfectly fine.
Unless you insist on sitting on a curb somewhere, you can likely see them in two places. Your best case is they march from Frontier Land so you’re right their after lunch and then can go see them on Main Street as well.
Bruce