I signed up for a full-day tour of Seoul, and received less than 3 hours of actual guided touring, some of which was in very limited/poor English.
I was picked up at 8:40 from my hotel, and the tour bus made it to the first site at 9:30. My morning tour guide was very knowledgeable, so you could get information if you asked a lot of questions, but information wasn't just provided automatically. In the cultural museum, we stopped so she could give us a quick overview of the history of Korea, and then sped through the rest of the exhibit didn't stop walking fairly quickly again until we hit a mandatory bathroom stop. It was raining, so I would have thought we could spend a little more time in the museum to make up for moving more quickly through the outdoor parts of the tour, but we only went to one exhibit, and spend about 15 minutes in the museum.
By 11:00 we were at the amethyst factory - my advice is to stop at the cute little local cafe next to the amethyst shop and get some coffee and chat with the barista rather than do some forced shopping no one on our tour bought anything. We made it to lunch by 11:30 and they quickly banged out some basic Korean food - it was decent.
After lunch things got much worse. Two of my fellow tourists and I got into a van with ?Brian? to go to the villages. We started driving at 1 and made it to the villages at 2. From about 2:15 - 2:45 I pestered Brian with constant questions that he often didn't understand due to limited English. After that half hour, he told us the tour part was over and to meet up at 3:30 to leave. I was stunned. I'm a curious person, so I'd been very excited to have someone to answer my questions so that I didn't have to puzzle over the signs - but the signs actually knew more than Brian.
Finally, I was dropped back at my hotel around 5:30 traffic, except...it wasn't my hotel. Brian had confused which location was my hotel, and before I could correct him, he was gone and I was stuck.