Since bitcoin has some privacy issues in its ownership and owners are often targeted, if you ever visit such a conference don't reveal your forum names or anything that can link you back here.
Otherwise if you are in for some free lunch then good for you. Most of the projects that will be talked about there will turn crap in a year or two. Rarely discussion on Bitcoin occur, which can be helpful.
Don't bother going to a different country just to attend them. Rather visit them if happening in your city.
It's just an event and if you don't dare to go, it makes no sense to expect bitcoin to become ubiquitous and become a means of payment globally. Because then you will be using bitcoin all the time and everyone knows your identity. Privacy is lost as bitcoin becomes ubiquitous and is used every day.