How Early to Camp Out to Watch Wishes at Easter?

We have 13 in our group with 4 kids under the age of 4yrs. I was thinking we would watch Wishes from the second floor of the railroad station, but I have heard that it too can get very crowded. How early should we start camping out for a spot there? I know Easter is a super busy time.

If anyone has suggestions for other good spots in the park (especially due to the construction) that would be appreciated. With several younger kids we are looking for something less congested than standing with everyone on Main Street.

If you aren’t too concerned with seeing Capture the Magic beforehand you can watch from behind the castle in Frontierland or in NFL. There’s not too many bad spots other than the fact that you can’t see the projections on the castle from behind it.