Most holidays I've been on have been slightly marred by the fact that if I eat or drink differently, I get terrible wind and bloating.
I know most people eat and drink a bit more on holiday but I try really hard not to be too silly, yet I still get an awful tummy.
I always end up wearing the same loose clothes, whilst some of the nice clothes I packed stay in the case because I'm just too bloated to wear them.
I'm sick of it - and no doubt there will be weight gain to deal with once home too 
I've not had one ice-cream or chocolate. I've had one cake (a scone in place of lunch). Yes I do drink wine and maybe some evenings I've eaten bigger portions than normal but it shouldn't justify such an awful stomach.