Quote.
I have recently agreed a deal with a family member to be the Event manager for a pub, I have started with poker nights, i now have pool comps, live bands.
You only recently agreed to adopt the glorious title of 'Events' manager and your already into poker nights - pool compts and live bands. What you really mean is that your making a list of possible opportunities.

Sorry chum but having been a publican and a finance director for years I can tell you that apart from a very rare gig most events are a complete waste of time. All great fun of course but the bottom line is they don't put cash in the bank.
Take Wide Screen TV for example.Sky charge according to the rateable value of the property and I think it was just over £500 a month in my last pub 5 years ago. That means you have got to take an extra 150 pints every week just to pay for it.
You talk about Live Bands. I have had live bands do gigs for free because I had a huge storeroom where I let them practice free. So no charge for the band but what about the extra staff. The extra cleaning up and the real cracker the cost of 2 doormen on the 2 entrance/exits. Add it all up and your talking at least £600- £800 in extra expenses.
In real terms almost 1000 extra pints on the night just to break even. That takes some doing when the typical spend on a pub night out has dropped from just under £20 quid p.p to about £10. Try charging an entrance fee then and it cuts down the takings.
I am sorry to be so negaitive OP but my own experience and that of several friends who have all run successful pubs and some still do is that entertainment is at best a reward for loyal customers say once a month. The rest of the time it is get rid of all staff and the husband & wife run in the traditional manner sharing shifts between then and when you look at the bottom line the old business model still works.
Thatis to earn a living wage. The only way really to increase that to pay for a nice car/holiday is also tradional - the late night lock in. Now that can be a nice little earner. Thepunter are so keen to go on i used to send the barmaid round with a glass to pay her wages for 2 hrs.
A fiver each to include another pint. So 10 of them and she gets a nice £25 quid double pay and after that pint it is top bar - spirits only.
Just a little tip for a newbie 'Events' manager and make sure you pull the bloody curtains.
Rob