Still if you personally serve someone too many drinks you will be sued personally. 

Stop hanging out with your deadbeat buddies that spend all day drinking, talking sports, and otherwise wasting away.

If drinking beer with friends on a Saturday night is more important than your future in real estate, then give up on the dream now and save yourself a lot of money, frustration and time. 

We shoot guns and drink beer while planning a fundraising banquet. 

If he saw me in a bar, he'd send the waitress with the largest cleavage over with a round of drinks. 

I should preface by saying I don't drink coffee.

@Reid Inman That would work, except if the boiler is also supplying domestic hot water for drinking, cooking , bathing etc.

As far as the mechanical work goes thats all on him. he will be piping everything to code (hopefully). if he asks you what type of material you would like to use on this project copper is best for water lines as for one copper joints are stronger than plastic and two copper is natural so your not drinking something that was sitting in plastic for god knows how long. now a days the go to is pex which is fine and also cheaper.

Please RSVP by Friday afternoon so we can get a good count for food and drink.

I don't drink coffee so I struggle to know exactly what guests would prefer.