@Nanlvsrav The free GIWC Welcome Cocktail Reception is a 2-hour cocktail event for up to 50 people (additional $10pp over 50). It includes a signature cocktail, beer, wine and soda and gourmet bites. I think they select the location and food choices for you and unfortunately it cannot be upgraded or modified.
They're not making me pay $10 per person and I'm having 100. They also let me choose the location so you may want to talk to your WC or TA again about that.