🇧🇩 Bangladesh for 🇿🇲 ZM citizens

In Dhaka, consider getting a Rapid Pass or MRT Pass for the metro (and Rapid Pass can also work across some buses): it's a reusable smart card and can be topped up, which saves time in queues and can be cheaper than buying single tickets repeatedly.

Bangladesh is still very cash-first outside premium hotels/restaurants-carry a buffer of Bangladeshi taka in small notes so you're not stuck when a place can't take cards.