I've done it twice. Both we did as buy-ins for a school auction so your fundraiser may be different. We charged $100 to play, drink and eat. We served a Texas themed BBQ menu, had a keg of beer, wine, soda.
The first time we used Wild Bill's who came across the river from PDX and brought the tables, chips, dealers. We divided the cost between 3 families as our donation, but as we learned the next year when we did it ourselves, well worth the price plus it was tax deductible. The sales person was great telling us what we could and couldn't do legally as we organized the thing. here are certain laws about what you can give as prizes. On advice from Wild Bill's, we gave out Visa giftcards to the top placers. We also had a first out prize. The dealers knew how to run the tourney so it ended when we wanted it to. They could instruct players who needed help. It was smooth and professional. Great equipment, etc.
The next year we did the same thing, but tried saving some money by hiring two people one of the families involved knew to be the dealers. We used various people's tables, a hodge podge of chips. It didn't have the same feel as the first year. The guys were nice, but didn't know how to run a tournament. It went on for hours rather than ending when it was supposed to. That might be fine for a poker night, but not an event like this. It wasn't as fun for the players or the hosts.