Good advice from Wessie.
On the travel cash card side, I have:
Two Caxton cards, one the mirror of the other. When I mislaid one, I was able to freeze it via the app, whilst the mirror image card (kept separately) stayed live.
One Revolut card.
One Post Office card.
One HSBC card, only available to HSBC customers.
On the credit card side:
Two Halifax cards, with separate credit limits, though I can (if necessary) pool the two separate limits into one. These I keep separately to each other.
One Barclays card. This is to replace the former JaJa (Post Office) card, which was withdrawn from service.
I can duplicate all the cards on my phone and watch. This means I don’t even need to touch my cards. Touching them less, reduces the chance of loss, to some degree or another.
Why so many?
a. They take up little to no space, weigh nothing and cost nothing.
b. Having mirror images and separate cards kept separately, means that I am (hopefully) never likely to be stuck.
c. Very occasionally a card reader fails to accept one brand of card. Having an alternative readily to hand makes life easier. Swearing at a dumb machine doesn’t work too well, too often.
d. I have been known to lend a card to my fellow travellers, who have lost their card during the holiday. That requires a degree of trust; I have never been let down.
e. I had a problem reloading a Caxton card at Le Mans, the app refusing to function. Had I not had an alternative cash card or a credit card, I’d have been stuck, cashless. The cause of the problem? An iPhone update, which the app could not cope with.
f. It is usually very easy to freeze or suspend a card, via its app. It is often easy to unfreeze the card(s) again, via their app. The exception is the Caxton card, which requires a phone call to unfreeze it. Had I wanted to unfreeze my Caxton card in a hurry, it might not have been so easy to do. As I had back-up cards to hand, there was no problem. I just waited until I got home to unfreeze it.
g. I always leave my main UK bank and credit card at home. Why? If I am ever so unlucky as to lose all my cards when I am away, I will not be scrabbling around getting new UK bank cards, too. As soon as I walk back through the door, my financial state is restored. In short, I separate my travel / holiday life from my home life.
h. I want to have more than enough cash / credit to get me home or help in an emergency or if the chips are down, from anywhere in the world. The bike / car becomes almost an irrelevance, if the problem really is bad enough. Thankfully I have never found myself in that position. Back the whole lot with decent insurance.