The tour was great, getting there and back was very difficult. Cozumel Mexico again hot and humid. We had signed up for the Mayan ruins tour which was an 8 hour experience, only it ended up being more like 10 hours. Our group met up in the Princess Theater, we were then taken to the pier and boarded the ferry for the 45 minute ride to La Playa Mexico and the ruins. The trip over was a little warm and the ferry provided a so-so guitarist and singer to entertain us, of course he went up and down the isles for tips after his performance - it was a nice diversion to the very choppy ride. After arriving in La Playa we were escorted to our bus that was to take you to the ruins. Our tour guide David was fabulous. David brought the Mayan ruins to life, he was very well educated about the era , the Mayan people and their life. Very good. Prior to arriving at the ruins we were taken to a souvenir shop for people to purchase items, I was sort of put off by this and of did not purchase anything. Upon arrival at the ruins, we were escorted through another souvenir “village” which also sold food, and for a price you could have your picture taken along side costumed Mayan people etc. We opted to take a little open aired bus to the ruins for $2 each as it was 102 already – or you could chose to walk the .5 mile trek. David had knowledgeable commentary throughout the tour which included about a 1 hour tour inside the ruins. The ruins were beautiful and so was the ocean view. We rode the opened air bus back to the village and enjoyed a light meal and beer (have cash – no credit cards) and waited for the bus ride back and snack which consisted of a bottled water and bag of chips. The bus really couldn’t keep up with the temperature and the air conditioning wasn’t adequate. Also, the toilets on board were not functioning. We arrived back to La Playa after a one hour ride and walked to the pier to board the ferry for our return trip back to Cozumel about ten minutes to five, we boarded the ferry………and waited……………..and waited ……………..and waited. They kept taking count of the passengers. The passengers trickled in slowly, passengers were requesting that the air conditioning be turned on, it was hot inside the vessel with no air-circulating - finally at 5:30 pm we left the pier, only to be called back to the pier to pick up the final two missing passengers. When the young couple boarded the ferry, passengers on board stood up and booed them shouting shame etc. Apparently, the couple was on shore bartering for a purchase and lost track of time. It was now 5:50 pm with a 45 minute ride ahead of us, and about 75% had been on board an hour already. Apparently, the air conditioning went down on the ferry in the morning, and wasn’t repaired before the afternoon return trips. We had 400+ passengers on board this ferry, no air-conditioning – no air circulation. It was stifling inside and people were extremely hot and began to faint, suffering and or showing signs of heat exhaustion. The ferry staff were busy selling water, beer and margaritas to a crowd that was growing angrier by the minute. The ferry staff are not trained to respond to emergencies only to sell product, the captain of this vessel was no where to be seen. People had to purchase water to attend to the needs of their loved ones who had fainted, were posed to faint or were so hot they became physically ill, staff did provide vomit bags for free. The ferry ran out of ice, water etc., people were angry, and demanded that the doors to the vessel be opened to allow air circulation as we traversed the ocean. When they did open the doors, people rushed to them and I honestly thought people could be swept out into the ocean. There was utter chaos. Those whose loved ones had fainted or were experiencing heat exhaustion demanded the ferry vessel staff notify Princess of what was going on and that emergency personnel be on the pier upon arrival. When we arrived people began to rush to the doors for fresh air, again chaos, someone got up on a seat and shouted to the crowd to let the sick off first – thankfully people honored that request. There were no fewer than 8 people lying on the pier by the time I disembarked the vessel. This was a very frightening experience. Who was at fault? Clearly it was the ferry business that didn’t inform Princess of the problems and chose not to repair the air conditioning, the young uncaring and indifferent couple who was late and didn’t really care, and where the heck was the captain of this vessel - no one was in charge! We were refunded half the cost of our excursion ticket, which was fair, the bus trip and tour of the Mayan ruins was great. If you ever wonder how horrific ferry boat mishaps happen in foreign countries I believe it can be attributed to untrained and uncaring staff on board the ferry. The medical center was inundated with patients. We just wanted to get on board, go back to our cabins shower and go to bed. Re-telling the event makes me upset.