We are having an open bar and my parents’ friends are coming, and so are some of their kids. I am not sure their ages, but my mom said it doesn’t matter, because I will have to pay for them anyways for the bar. In your experience, do you have to pay for every adult guest (aka too old for a kids meal) or every adult guest over 21? I really don’t think I should include teenagers since they legally won’t be able to drink.
For my bridal shower venue we were considering doing a mimosa station for a per person price. I have a handful of baby cousins 3 years and younger and a handful of adult under 21 cousins. The venue's policy is to charge the per person price for the total head count. We ended up doing a consumption bar where the host paid based on the number of drinks served. That way we didn't feel scammed paying for mimosas for a 3 year old. LOL I'm not sure if it ended up being cheaper.
Our venue included all food and beverages. Children 12 and under were $35pp and got a kid's meal, people 13-20 got a regular menu and were $100pp, and adults 21+ were $120pp and (obviously) had the regular menu. I'm not sure if the bartenders were carding, but the only people under 21 in attendance were 19 months, 4, and 7 so they clearly weren't trying to get alcohol.
Our venue does not charge for alcohol for guests under 21. They had a price for 21+, "minors" who were old enough for the adult meal but not old enough to drink, and children under 12 who got a children's meal.
It may depend on your venue/bar company. One venue we looked at made us pay for everyone because they could get soda or juice. But the venue we ended up choosing uses a company that only makes us pay for 21+ as they legally have to check IDs for anyone who looks underage.
I used to work as a caterer and when I worked the bar we had to check ID when they were getting alcohol regardless. But you would have to pay for them if the bar is providing sodas and what not. We did have some couples provide their own alcohol and we provided the sodas tea coffee and lemonade so it all depends
We had different price points for the following age groups: Children 2 and under (free), children 3-11 ($33), children 12-20 or adult non-drinkers ($53 pp), and 21+ adult drinkers ($85). That fee included bar and food.
Daughter's venue charged the same for all guests (including the pp charge for the premium open bar) except those with kids meals (under 12). We had three nieces who were between 15-20, so we paid full price for them. I asked the venue coordinator and she said the bar charge included soda and other nonalcoholic beverages, so, yes, even though they were under 21, we had to pay the full price. (Honestly, I'm pretty sure at least the 20 year old was likely drinking, so apparently the bartenders weren't carding.)