I'm planning a roughly 2 week trip I'll be taking to Croatia in early-mid January. I am 22M and fully vaccinated so I'm not expecting Covid to be an issue as a US traveler. This will be my first ever solo trip (although I've traveled a fair amount to Europe before) so I'm hoping to meet a lot of people through social/party hostels. Is it fair to assume that a lot of other young/student travelers will be visiting and that social/party hostels will be active with a lot of people?
My budget is roughly $2,000 for the 2 weeks (excluding flights), is that enough? I plan on starting in Dubrovnik and working my way up the coast seeing places like Korcula, Bol, Hvar, Novalja, and flying out of either Split or Dubrovnik. Additionally, how do people typically get around Croatia since a few of the places I'd like to see are islands. Do most people take buses, trains, rent cars, etc.? I've looked on Kayak and it seems like renting a small car is pretty cheap so I'm leaning towards that option.
This is going to be my first solo trip and I'm super stoked so I'd love to hear any tips, additional recs on places to visit, social/party hostels to stay at, and things to do in these towns!