Honeymoon Advice for Greece and Backpacking Through Europe

Hey everyone! My fiancée and I are planning our honeymoon for June 2026 and are planning to go to Greece for one week to splurge on a more romantic and private experience then head over to backpack on a budget through Europe for the following 3 weeks. We are wanting to know if anyone has done something similar and has any advice/suggestions for where to visit, general backpacking information (trains, hostels, etc.), and how to best save money. We are both from the US and recently out of school and are wanting to make the best memories possible. We appreciate any insight, thank you!