OP- it’s ALL about context .. some people say this word as ‘banter’ and if they’re ok with that then it’s no problem to anyone else really.
If he said it in a silly ‘sing song’ voice while sighing etc then it was said (imo) like ‘i’ve had enough ,, good night’
If he was drunk /tipsy (only say this cause you’re on holiday ) then drunk could be a factor
if he’s desperately saying this as it’s the ‘straw that broke the camels back’ and just say he’s at the end of his tether and there’s been a build up of him zipping his mouth and this tipped him over the edge and he said it in pure frustration over a build up of things rather then this just being a ‘silly fight over nothing’ as you state
Or he’s never said it and to say it in a serious tone /voice (only you can be the judge of that ) then he hates you
if you think it’s the latter i’d try to make the most of the holiday as NO good will come from ‘talking it over’ while on a lovely probably expensive trip
if it still bothers you or festers at you though when you’re back try writing him an email and/or a verbal frank cinvsrsration .. see how you both genuinely feel about each other .. dont make permanent decisions based on temporary feelings or emotions
this day and age is do common to go to couples counselling .. it’s really no different from hiring a personal trainer for an hour here and there
don’t throw in the towel (just yet) and just for now while you’re on holiday when /if you feel like you wanna vent /go mad it question him have a quick plan B .. you’ve gotta call your mum , you wanna check the girly market stalls and boutiques for window shopping or buying gifts , you wanna go to the indoor pool to get some exercise lengths in as the outdoor pool too noisy busy .. you want to take some she if pictures on your camera/iphone, get stuck into a book ..ANYTHING ! and chances are you’ll be less annoyed as the time passes
always play the long game op .. you’re not doing it for him you’re doing it for you to have a nice end of the holiday and no bad memories of arguments
and lastly remember what’s others say about you says more about THEM then it does YOU .. so this is much easier said then done but try with all your might to not take what anyone says or thinks of you PERSONALLY as what they say and think lies with them and is none of our business. have a wonderful holiday op