The tour guide seemed too young and wasn't very good at managing the group. Although called a tour guide, he didn't actually introduce the history of each site. It was a far cry from my other travel experiences in Vietnam. The worst part was that after letting everyone off at each location, he wouldn't announce the meeting time. When I asked the guide what time we should gather, he just replied, "I'll wait for you here," in such a low voice that not all group members could hear him. As a result, the entire day's itinerary was spent waiting for other group members to return. Plus, it was a holiday, so there were tons of other tourists at every spot! For lunch, because our group arrived at the restaurant late, we only had half an hour to eat, which felt very rushed and uncomfortable. The cycling experience after lunch was truly unnecessary; the bikes were terrible, and the roads were awful—you can skip it. Throughout the entire trip, only the boat experience was complete. The Mua Caves at the end were a complete question mark; we paid to enter but only had 40 minutes, so there was no time to climb up. The park is really beautiful, and it's such a shame we couldn't go up because we would have been late. Again, at the final meeting time to return to Hanoi, we waited in the car for 40 minutes because other group members were 40 minutes late. It felt like two-thirds of the entire experience was spent waiting for people! If you're spending a whole day, I recommend booking a small group or private tour; you really do get what you pay for!