April trip coming together

We are thinking of traveling again in April, and if the trip comes together as planned it will be based out of Budapest as we have friends there and will likely include a road trip to Vienna and Serbia, and some much smaller chance of Croatia. Eastern Europe has been on my radar for a while now, so it will be nice to get out there with the kids and see what they, the Hungarians, Austrians, and Serbians,  have to offer... I imagine it will be lots of good food and good times.