It really depends on whom you ask. Tipping a cocktail waitress at least $1 for free drinks she brings to you is still recommended, if only to keep them coming back, even finding you if you move to a new table or machine. Tip a bit more per drink and, hey, the pours may get stronger as word gets around.
On Average WeSwapper's spend a total of $205 (£164) per day in Las Vegas. This reflects what everyday travellers tend to spend in Vegas. Think mid-range – most of the major attractions, a few cab rides, maybe a big night out, and a bit of shopping on the side.
So bring at least $40.00 for each day spent in Vegas just for basic living expenses but remember there are no frills or even beer in this budget. To enjoy Las Vegas at all, $100 or $150 a day would be much better.