I want to book a trip March/April time. Just wondering how long to go for and any advice on what to visit while I'm there. Are the shops open over the weekends? I'm looking at packages with the tour included but will the tour be available over the weekends. I'd be interested in any must see places to see while I'm out there, or must buy items from anybody whose been. I understand the Amber is real in Poland, I think most of my Amber is plastic! Thank you