Mathematics III is necessary, so we should learn advanced mathematics, line generation and probability theory well.
English is very important, and English for postgraduate entrance examination is compulsory. In addition, as a tour guide, if you have a strong English, you will have an advantage. At present, the lack of tour guides in China is not ordinary tour guides, but senior tour guides, and senior talents are scarce. You can get an ordinary tour guide card first, and then try to get an advanced tour guide card.
Politics must be tested, and you should know more and experience more in politics classes at ordinary times.
Specialized courses should learn tourism geography, economic geography, China geography and world geography well. If you have the opportunity to learn more branches of human geography in the future, it will be of great help to you!
I hope you succeed!