Opening a fee-free bank account for travelling?

Haven't travelled abroad since I was a kid so my brain is hurting trying to figure out everything.

I'm travelling from the UK to Finland for 10 days. I've been seeing a lot online about getting a fee-free bank account like monzo or starling to use when I travel, and it seems like a good idea. I also like the idea of just plonking all my spending money into a dedicated account. I also don't fancy the idea of bringing cash with me and I imagine Finland will be similar to UK in that alot of places will be card only. I'd probably withdraw some cash once I'm there to have as a backup but I read its better to do this with a fee free card in the country you are travelling to.

Which bank would you guys recommend, do they all affect credit score equally and does it matter if I keep my current account with Lloyd's (i literally only want the fee free account for travelling, I do not want to switch)?

Is there anything else I need to know or is it literally as straight forward as - open a second bank account with fee free bank, shove spending money in there and use it?