I am not sure if I understand your question. If the question is about taking a one-day tour bus from Prague or Linz, I cannot answer that question from experience. We did not take a guided tour bus. My wife and I travel on our own and plan our own tour. Thus, we took a bus from Linz, Austria called Flexibus for US $ 9.98 per person to reach C. Krumlov. We made our own hotel reservation at Hotel Kovince (a great hotel), stayed overnight and visited various places on our own. Then, we took a shuttle (a 6 passenger van by CK Shuttle) to Prague for $ 43 per person. During our stay in C. Krumlov, we visited the Tourist Information in the main square. They informed us about a "free" walking tour that took place twice a day. The tour is not really free because most people give some money to the guide at the end but there is no mandatory amount. Our guide, Hanza did a great job.We gave him 200 CK (about US $ 10). Hanza was very informative, amusing and answered all our questions. In the evening, when day-trip tourists left the town, it was wonderful. Since we stayed at a hotel overnight, we were able to take walks on the banks of the river, try different restaurants and cafes, talk to local people. Hope I have answered your question. If not, please ask the question again and clarify.