Many Seniors have given their opinions and it was useful.
However, from your (TS) text above, is actually a tall order. That is, "to print and give the print out as gifts". Shooting and organise it to be delivered with a lead time is totally different).
Giving out with the best of your ability i.e. to the "Happy amount/numbers" of receipents, meant you will have a very hard time to cope with the printings, not to mention the "minimun" amount of time to work on slight PP if needed, printers with assistances etc.
Working within your capacity might end up with complaints that many don't receive your "expected gift prints".
The most important question is can you cope? (Ref to PE post for detail.)
If yes, look out for Catchlight's post above.
Example, events like a "SMALL" Golf Charity is an easy one of the many. The event will be about 4 -5 hrs for the game and with 2 hrs for dinner. So you have quite some time to work out. Besides, could cover more happy faces as each print out can have a flight of 4 persons (can print 4 prints at one go). But you must watchout on the Tee-box for all the flights from the second nine to turn around. Not much time for general on course shot. Still, the photographer will rush out to have the photos printed out at a Colour print Lab instead and return with time to take some dinner shots.
Knowing my limits, did one "free" job for a friend's Golf event. ALL at the event will not take notice that it is a free job. Many will cry out to you, "hello, cameraman here, here, there there....". And the result ..... that was the last "Free Job", except for my own temple.
Work out your cost first ..........(in all aspects), than talk about charges.