I am going on trips with Anytype as well. Worked fantastically for my last two week-long trips. Relatively quickly, you can prepare on your PC an itinerary with files such as boarding passes, tickets, both as a normal file and embedded images to show at gates and similar. You can copy-paste e-mails, information from the web, links (URLs, etc. with additional context). Prepare for your travels, tick off things to do before leaving for your trip as well as creating tasks (as reminders, though without an actual reminder in your notification bar on mobile. You have to check the app for them.) to do before each day on the trip. All of this can be dumped into a single “page”, or organized into a hierarchical structure annotated by tags, relations between the objects and more.

To put it simply, I always find something missing in various itinerary apps. Anytype gives me the freedom to input every and all type of information I need for and during the trip.

Slight warning: If you input the files on PC, you need to them click on them (download them to your local storage) in the mobile as well. Then you can access them without requiring connection to the internet from your mobile later on. If you do this, everything you put in your Anytype itinerary will be accessible offline. Ideally, try accessing everything on mobile when your Wi-Fi and data connections are turned off.