I have to two questions:
One: I am a bit confused about which website I should use to buy the tickets to the Colosseum, Palatine Hill and Roman Forum. Rick Steves' guide says www.archeoroma.beniculturali.it/en under the "cost and hours" section, later on when he explains how to get the tickets for the underground and third ring tour he writes another website, which I have seen in this forum as the official site, www.coopculture.it. Are they the same? What calls my attention is that the telephone number (if I choose to buy the tickets over the phone) is the same. Where have you bought your tickets?
Second: I thought that the underground and third ring tour was a permanent tour but now I saw it will end on April 30th. Any idea if they close it and re-open again during the year? If so, can I book this tour after having the tickets for the three sites?
Thanks!