What's one travel tip you wish you knew earlier?

I've been traveling a bit more recently and realised there are so many small things you only learn after making the mistake yourself 😂

What's one travel tip you wish someone told you before your first few trips?

Could be anything really:

• saving money
• airports
• hotels
• internet / SIM cards
• packing
• getting around

Doesn't have to be anything complicated. Just something that actually made your trips easier.

I'll go first: always download offline maps before leaving the airport

What's yours?