The point of travelling is to create experiences that you will remember. You do not have a very good memory. You need to record what you did in photos and a travel notepad. It is very important to do it as you travel - you will forget things afterwards. An unremembered experience is a tragic loss.
Take lots of photos. Not for social media, but as a reference of what you did.
Create a travel notebook. One page per day. Left side for reference info, right side for notes. Reference info:
Emigration. Often they want to know:
Flight number that you arrived on and flight number that you will leave.
Number of days in country.
Hotel address you are staying at.
Take a photo of your bag in case it gets lost.
Take photocopies of your passport in case it gets lost.
Put a sticker on one of the passport to easily distinguish between the two.
Use a paper clip in passports to keep the current page & and docs in place.