Glad to know there will be on-stage seats for 30 under 30! The Telecharge seating chart looks quite confusing through. It looks like the stage is the ham between the two slices of bread that are the orchestra and on-stage seats. But why, then, do they include the first few rows of the stage seats in the program as opposed to those far in the back?
I've been looking at the ticket options for a while, and it looks to me like they only released 30 Under 30 for previews. No dates that I checked in October or November had any tickets available, but I managed to buy two first row, on stage seats for a day in September.
MTC shows (with the recent exception of Constellations) are usually very easy to rush, so that's always an option, too, if you don't want to pay full price and can take a chance on the day of.