Many bars allow you to toke up. Simply pop in and ask the bartender mate.
Indeed my partner & I whittled away many hours, all times of the day & evenings in such bars (some open until 3AM on weekends if I recall and fairly late in the week, but I admit I was happy to see my bed by midnight/early morning most evenings

) and as they don't sell weed, it's great as you do not feel obliged to buy more when you've got half a dozen "variety" baggies in your pocket and they serve le beer

Other than that, I took a nice pure pipe & pipe cleaner for the hotel and quick toots whilst out and about... If you come across Homegrown Fantasy (nice weed, bit expensive, cocky young un behind the counter thinks he knows everything,

, I bought some cheese from there cos he rated it sooooo highly. Was good, but there's far better around

) Aaaaaanywhoo, there is a nice bar next door which I believe opens late every night and also has a smokers area for any of your crew who might like a ciggie
Hope this helps.