So many of the hard "rules" should really be about moderation anyway. It's just with our lawsuit happy culture (in the USA anyway), they would rather say "No X, Y, & Z" then "Only eat/drink in moderation". The only thing they seem to do the latter for is caffeine and that is because our coffee/caffeine addiction trumps all apparently
I have eaten sushi and other seafood (though I do stay away from the really high mercury predators and I am aware of how much fish I am eating), cold lunch meat (though I do like it warmed up so I will eat it that way if it is easy, but I don't go out of my way), etc. and while I haven't had any yet, I am not opposed to a small amount of beer or wine. I am limiting caffeine, but honestly it has very little effect on me and I only consume it because I can't get caffeine free versions of some of the drinks I like and I like a bit of chocolate now and again. I am more worried about caffeine after the baby is born and I am breastfeeding.