1933 calendar lists ten commandments for tourists

And the commandments are:

1. Do not travel abroad before you know the most beautiful country in the world – your homeland;
2. When you travel abroad, don't forget that you have to behave there so that the country can be proud of your arrival abroad. You represent the entire nation.
3. Before heading to a country, get to know the literature to avoid travelling blind. Read the belles-lettres of this land so it gets close to you.
4. Try to get acquainted with this country, even if you stay for only a short time. Try living the life, not only to eat and drink well.
5. Even if you are travelling in a group, try to learn phrases in the language of the country you are travelling. They can come in handy.
6. Try to be pleasant everywhere abroad and not to be a burden. Adapt to the customs of the country to travel. Don't be too loud in England, refrain from criticizing church in religious communities.
7. Don't travel only where it's fashionable.
8. Don't travel to boast, but to learn.
9. When you're abroad, don't praise everything you see there. Consider whether there is something worth praise in your home country. Be critical, but fair.
10. Don't travel to countries you are not welcome in.

The 1933 calendar is available at the National Library of Latvia.