I used to enjoy a couple of small glasses of diet coke a week and my dietician said that small amounts like that would make no difference to the pre op diet. Glad I had them as honestly didn't realise that fizzys were a complete no, no post op and forever! Wouldn't have change my decision to have surgery at all but I do really miss the odd diet coke. It's really hard when you go out to the pub for an evening with friends too as I'm not a drinker at all, I used to have a couple of fizzy's then. Can't do fizzy, cant do juice and pub squash is diabolical and sugary...................I've ended up taking a little bottle of squash in my handbag to add a dash to my bottled water. I'm sure if people saw, they'd think I was a tight wad sneaking in vodka without paying for it or something.......we did used to do that at doos as teenagers though! lol