Keep your keys on you, in your pocket (if you're a guy), or some such ob
Remember this, when you're meeting a group full of people, they all generally as a group will subconsciously recognize that there's no way you'll remember their names and such, and will generally feel a sense of compassion for you. This is especially true if all of them, or even a majority know each other. So, they will generally be predisposed to wanting to help you. Just smile, be kind, and do the best you can. If you're dealing with a foreign language, take your time, the effort is appreciated.
You're welcome. I have to teach classes a lot, and I have agoraphobia (fear of strangers, public, other people) so life gets weird for me at times. THAT is why I had to learn about brain signals and such, your question hit home. I hope you're helped by the suggestion.
Bach's rescue remedy
picture them in socks and underwear
Relax because they are as anxious as you are.
Is it your in-laws?