...I work for US Government for over 20 years and know their ways. Example: We received invitation to attend solider´s farewell party at canteen. We (Europeans) often correct each other that it´s not invitation but welcome... because we pay our meal ourselves to celebrate his/her farewell party. For European - If you received Invitation to celebrate, mean is they treat you with drinks and foods. I remember when I started to work there at 20 years ago... I received an Invitation to attend solider´s farewell party... I was like
because I didn´t know solider well... I asked my co-worker about this and then suggest to share the donation to buy present for solider... My co-worker laughed and said, oh no, you do not need it because you pay your own meal & drink... I was like
and said "Why solider write "Invitation", not "Welcome" ... My co-worker said that it´s American´s way. I was like Ohhhhh.. I know their ways now... until I saw this thread here and understood prefect...