I am going to get a complete pasting, which I understand, but I agree with you @Calpi. The normalising of alcohol from such a young age and the dismissal and laughing reactions to your concerns are typical of why this is a problem.
Would the reactions on this thread be the same if the birthday pictures had been of the little girls holding rolled-up banknotes or straws to their nostrils, posing and pretending to snort lines of strawberry Nesquik, I wonder? Because alcohol, whilst not being illegal, is still a powerful and destructive drug. Possibly worse, because it is acceptable, 'fun' and creeps up on us in an insidious way.
Alcohol does make us have more fun, lots of times. Until it doesn't. And so, by definition, the ones having the most drink should be having the most fun, shouldn't they? - But look at the average city centre high street at 3am on a Sunday. People stumbling about, puking and p-ss-ng in doorways in states of undress, getting into fights with bouncers and rozzers and their mates trying to haul them away, girls sobbing after pointless arguments looking for a lift home that may or may not be in a registered taxi. Most people can enjoy a few drinks and then stop. Brilliant. But the actual facts of the harm caused by drinking, the burden to society, the NHS and the despair and broken relationships that lie behind the sparkly gateway are grim and getting worse. I know someone who was screamed at for saying "no thanks" to a cocktail at a birthday party, with everyone else piling on and telling them they were 'no fun', 'hysterical' and 'they'd ruined the party for everyone'. It was a party to celebrate a 3 year old's birthday.
The MN Health section has an Alcohol Support category. That runs to nearly 39 pages of individual threads - around 1,950 separate threads asking for help and advice with problem drinking. The category for all other addictions combined (gambling, junk food, shopping, drugs, plus others) runs to only 12 pages of individual threads. That's no coincidence.
Normalising drinking for small children - and pouring mockery, derision and unkindness on people like the OP here who are brave enough to voice a concern - is problematic and very sad to see.
I doubt anyone will look at this. But I share it here anyway. The reality of the end | Mumsnet. We all start with one single sip.
You can hate me and laugh at me for posting what I have said. That's OK. I won't ever hate you back.