Our final costs came to $70/person (imbibers) and $55/person (abstainers). For those who paid the $40/person deposit, the outstanding balances are $30 and $15 respectively. Unfortunately, the website wouldn't allow me to add a second payment opportunity to the existing reception link (or, I've yet to rise to that level of online wizardry). So, I created a separate event with a hypothetical future date, in order to collect those remaining funds. Hope it works and thanks for your patience!