<human>: Hello.

So here is the deal. My girlfriend and i were born on the same day (freaky, i know) and i wanted to throw her a surprise party. our party is in december (dec 17th babies!)

basically, the restaurant covers a 3 course meal, open bar/beer/soda and dessert. since we all have been to parties where everyone at the end throws cash/plastic on the table, spends 20 minutes looking at the bill until someone finally puts everything on their card.... *i want to avoid this*. since im putting the deposit on my card, i figure i would have everyone just give me their cost per head at the end in cash. how do i write this?

also, how much do i put as the cost per head? the restaurant figure i got quoted does not include tax/tip. but wasnt sure if i should already calculate the cost as a "this is the final cost, all inclusive" cost per head or should i rely on everyone to figure their own tax/tip at the end?

i also want to stipulate that no one should bring a gift since them being there is the gift.

Provide a brief overview of the text.
<bot>: we live in rural neighborhood in "the middle of nowhere" armpit of america that is boston and i need help with wording of the invite.