Depending on the country you go to, and your tolerance for higher fees for converting BTC to FIAT, there a growing network of Bitcoin ATMs (see https://coinatmradar.com). The deployed network is pretty unbalanced if you take a look at the map, but the option is there. Besides fees, you also need to look at the cashing-out limits and associated requirements (if any – normally depending on the amounts being cashed-out).
Also there are countries where crypto is ban, make sure the country you are going has no such restriction. Crypto ATMs have high fees thats one reason why they are still not popular and widely used.
