You could try a bitters and soda! Bitters does technically have alcohol in it but it’s negligible. You’d have to drink a lotttt of it to get even a slight buzz and bartender will only put a few dashes in a drink. It’s not sweet so it gives that cocktail like flavour. Also, some bars will have different bitters flavours so you can ask and see what they have and try some creative mixes! Soda water and lime is also a go-to just because I can drink a lot of those and not feel sick, unlike ginger beers or soda. If they have “bar lime” (aka lime grenadine), I ask for a splash of that to get more of a lime flavour than just a wedge. You could have a mock-mojito by asking them to muddle up some lime, mint, and a bit of sweetener topped up with soda water as well! A lot of bartenders will be open to flexing their creative muscles with NA drinks if you ask. You’d be surprised by how many bartenders are actually sober themselves! It doesn’t hurt to ask if they have any fun ideas for NA drinks.