Contiki's Split -> Rome Adriatic Spirit trip was a complete and utter waste of time, money and energy. The itinerary was incredibly misleading, listing several nonexistent tour "stops" such as Neum, Kotor and Bari - where we did not even leave the bus. This trip, which was essentially only an 8-day tour, included two wasted back-to-back days of 12-hour straight travel on the Coach Bus, in which we were told that we should not use the bathrooms for lack of place for the driver to empty the refuse, as well as a 12-hour overnight ferry ride between Greece and Italy in which we were warned not to interact with any of the other passengers on the ferry as they're known to be "creepy truck drivers."
I paid upwards of 20 Euro to have 480 mb of data on the bus so that I could at least be connected to family during these mind-numbingly long and uncomfortable bus rides, and to my dismay, found that the bus wifi (like many of the promised tour "stops") did not actually exist. I'm still in the process of trying to get my wifi money back from Contiki.
No activities were included in the $1355 USD I paid up-front for the trip. Instead of being supplied with a knowledgeable tour guide and going on walking tours or visiting museums to learn about each of the locations, we would simply get dropped off in the center of town for hours at a time, and told that we had "free time" to "explore" on our own. This was very disappointing as I hadn't done any of my own research ahead of the trip, as when signing up for an organized tour group such as Contiki, I expected to be guided. Rather, any and all of the activities required "add-on" fees, which I suspect went directly into the pocket of Contiki, as these activities were incredibly overpriced. For example, I paid 60 Euros for a Roman dinner which consisted of very simple, large-batch, disgusting microwaved food, and 40 Euro for water sports, which we were told by other tour guides go for 13 Euro regularly.
I felt mislead and to put it simply, screwed over by Contiki time and time again on this trip. The accommodations that we stayed in were so far from the centers of the towns that we had to pay 10 Euro cab rides back and forth to get anywhere, which I did not budget for when planning out my trip.
With flights to and from New York, the trip, all of the add-on activities, the endless cab rides and food, this 8-day trip cost me $3400 USD (which I would not describe as low-cost at all, which is what Contiki bills itself as) and was incredibly disappointing. I would caution anyone against taking this trip, unless you have a penchant for long bus rides and getting ripped off by Contiki.