For france:
contactless on phone should be ok with widely used card providers (VISA)
Beware, since covid, use of cash has dramatically fallen, last month a restaurant struggled to give me 2€ change, they didn't have 2€ in cash !
Paying in cash with the right amount should never be a problem though.
Beware, since covid, use of cash has dramatically fallen, last month a restaurant struggled to give me 2€ change, they didn't have 2€ in cash ! Paying in cash with the right amount should never be a problem though.