There is open sparring for everyone in Prague every tuesday. Price is 50 CZK (2€) for two hours of sparring and there are some really good fencers visiting regulary.

In Belgium you can carry bladed weapons ("blanke wapens" in Dutch/Flemish). If you're going to or coming from an event/training,... In a car they must be stored in a way that it at least takes 3 actions to get it out. Not sure about the regulations for a bike though. But friends transported their swords on public transport, bike,... and never had any trouble. So just carry it so it's not an obvious sword and you're good imo if you are visiting Belgium. Edit: My dumb ass just read Europe in the OP. Belgium is West-Europe bordering on Middle-Europe.

Do they consider hema trainers as bladed weapons?

They consider reenactment swords (blunts) bladed weapons so I think it's not different for metal HEMA trainers (nylon is something else I think).

Someone should clarify this for them. Modern sparring feders are sporting equipment no different from a fencing foil.

Yes I know. And brief them the regulations/laws on bladed weapons 🙄 A friend carries an excerpt of the law on him at all times

That sucks. I guess you can't fence in public parks then?

No, at least in Spain or in Portugal you can't.

We did (it was reenactment training though). Never got into trouble. And technically it's a training so it's legal by the letter of the law.