If friends are reliable, and the wine tasting is held in their restaurant, monitored and there are many people present, then the wine tasting should be safe and not a scam. However, if you have doubts about friends or restaurants, or if you have some unusual behaviors during wine tasting, such as involving a large amount of money or damaging the property of participants, you need to be cautious.
The above information is for reference only. Please be vigilant and pay attention to safety when participating in such activities.