This invitation is valid only if I come to Poland. This is the main problem, because your plans is traveling to Slovakia and Hungary.

But, maybe there is another solution. In a few days, registration of our club will be completed. Then, we may ask for group visa and probably we will get it. Probably, not sure, because we are from Serbia, and unfortunately, lot of countries have bad opinion about us. ???

Let me introduce you in it. Our main problem is more than 100.000 illegal Serbian citizens (mostly from Kosovo, you know Albanians) in EU countries. So EU blocked us from leaving Serbia. But, this is not fairly solution. See, they don't love us and don't want to live with us and we suffer. Young people, students, families etc. are blocked, because of bad politics.

If you are interesting, you may visit Serbia sometime. I can guarantee to you very good fun. We also have castles, if you like them.