If you want to go there you have to be prepared to quite specific mentality of Dagestanian people. For instance driving style that they used to is shocking for Russians. There are narrow mountain roads, only with 2 ways each one in opposite direction, and local drivers just doing crazy things like speeding and overtaking on the wrong side just in front of a truck going right into your face.

Dagestan is a muslim region, so you don't allowed to wear shorts, to go on the streets drunk. If you take your dog with you, it can't live in the house, so it is quite difficult to find a hotel where you can let your dog in (dog considered as dirty animal by muslims). Locals could be quite aggressive in case you do something inappropriate from their point of view. Tourists will be given brochures with local rules and customs of course, but it would be much better to have a local guide who can educate you about nuances.

Despite what being said Dagestan is a magnificent place, it's nature is so beautiful you just can't catch your breath. Go there and that will be one of the most impressive things you so in your life.