Facepalm

No, it's not allowed through a city ordinance. It's still entirely illegal in all of the Netherlands.

They just have a stance that they don't take action in most cases that are inside specific guidelines, which includes the open sale of weed in certain shops.

If they wanted to arrest you for something that under gedogen is usually permitted, they still could.

City ordinances exist here and in the Netherlands too, the difference is that a city ordinance makes something explicitly legal while in the area it covers, while in gedogen, the thing stays entirely illegal, the cops just will overlook most all cases unless it's something like Minaj did where she's hauling around a quantity larger than you would for personal use and trying to bring it across borders.

If I go from Belgium to the Netherlands, I can smoke it up at a dutch coffeeshop all day long and even carry around a small quantity, it's illegal, but cops won't do anything about it.

The moment I go from the Netherlands back to Belgium, I could get in trouble if I still have that weed with me.

And that's within the EU, with open borders and free movement of EU citizens.

The UK however no longer is part of the EU, so they are even more strict about taking drugs across borders with them.