Learning a new language is exhausting and spending an evening with people speaking a foreign language is very demanding.
According to Gabriela, this is what you can do to ease the process:
Be aware of what you can and cannot say, don’t be unrealistic
Prepare your basics to show that you are making efforts to learn the language
Make clear to the family/friends that you can’t understand everything (even if they shout 3 times the same thing!)
“Overall, it’s healthier to be transparent and explain the situation. It’s alright if you need to stay on your side and you are not able to participate actively in the conversation. Let them know that you enjoy their company and that listening to them is helpful to learn the language.”
https://myforeignhalf.com/en/how-to-survive-a-multilingual-relationship-6-tips-from-a-psychologist/