Can a high power laser pen used in pubs?

Hello, everyone! I plan to run a pub in downtown with my friends, and luckily I got financial support from my uncle. So I decide to use red Light Laser pointer pens and Blue Light Laser pointer pens to cast amazing beams. Laser pens can display various beams and patterns. It must be wonderful. Is it more surprising if I mix red Lasers with Blue Lasers? Actually, I went to some local stores which retail electronics, finding that they are a little bit dear, especially the blue one, so I decided to buy blue laser pointer pens online. One of my friends recommended a shop named Mostbuying selling cheap wholesale electronic products including various powerful laser pen, laser keychain pen, and 300mw green laser pointer pen. But can these powerful green lasers be used in my pub safely, say, a 200mw green laser pen? I’m looking forward to your replies.