Why would going to Europe not be stress free? The worst that can happen is youíll need a visa.
Well in the event of a No Deal the UK will become a 3rd country.
So in that case just pray that you don't take ill as your EHIC card which entitles you to state funded medical treatment in the EU will no longer be valid.
Think long and hard about what personal possessions you bring with you as you will be subject to restrictions that were wavered when you were part of the EU.
Take the bus were possible as you will need an International Driving Permit and an Insurance Green Card if you fancy hiring a car, as a member of the EU you currently don't need either.
Oh and there is every chance that as a citizen of a 3rd country you will need a visa.
Apart from that it will be absolutely stress free. But you will have your blue passport to console you.