When to go to MK - Mon, Fri, or Sat?

[marriedmarylander]

I was all set to go Tues until they changed Spectro days on me. Now I have no clue when to go... We arrive Monday which would leave us 1/2 at MK. Then Fri is EMH morning which we will probably not make it for. And Saturday I would think is crowded (even though touringplans recommends that day). I had a PS for CRT dinner Tuesday which I doubt I can get one of the other days. So should I go to MK Mon, Fri, Sat or just skip Spectro?

Added:
Do you think if I went to go to MK in the evening on Saturday we would be able to get in? Would it be full to capacity?