I've been booking entrance tickets online for our trip to Italy around Christmas time. Last time I checked for Colosseum, it looked like December hadn't opened up. Now it looks like some of it has. There are green boxes (I assume tickets are available), red boxes (tickets sold out?), but then during the week we are there, the boxes are all gray. Does that mean it's sold out or not opened up yet for purchase.
If it is sold out, what is best way to proceed? We were planning on purchasing early morning tickets.