Again and again you can see tourists with flip flops on the volcanoes, which can sometimes lead to burned feet. In general, sturdy shoes are required and for volcanic hikes we recommend hiking boots with tulips, so that no volcanic ash gets into the shoes from above. And some fitness is not a disadvantage either. One should also note the height of the volcano, because with high volcanoes the temperatures on the crater rim are correspondingly lower than at sea level, one calculates about 1 C per 100 m heights difference.
Even if you have booked a visit to the volcano, short-term cancellations may occur due to unexpected events.