[Cockbrand]

> on a tour I would be afraid of not being able to pack enough things

You can always start small with a weekend trip and see which of the items you packed you actually needed, and you'll find out which items you forgot to pack. If you take good note of these, you'll be a proficient and efficient packer very soon, and you'll go on trips that last for days or weeks with the exact amount of stuff you need. And at least in Europe, the next supermarket is never so far away that you can' t reach it on the next day in case you did forget something essential.