Jan, you might also check with either Daniele or Remo at www.driverinrome.com about a combo transfer private tour. We used them a couple of years ago and they were great. When we showed up at the Colosseum, the lines were around the corner. Daniele took us to a ticket office over by the Forum to buy our tickets,where there was no line, and then back to the Colosseum, where with tickets in hand we walked right in. At the Vatican, we ran into the same thing with the lines in the morning. He took us back there in the mid afternoon after the lines disipated and we walked right in. It was well worth the money to see all that we saw in just one day. Others that had taken the ships tour saw maybe 1/4th of what we got to see that day.