There is nothing worse than trying to keep a group of lads together while going on a pub crawl in Edinburgh. Quite often many bars wont let in a group of males in, and for the organiser there is nothing worse than having to try and figure out where to go next.
There are party bus and bar crawl companies out there who can help arrange and guide your group from different bars in the night. http://buspartyedinburgh.co.uk/ is a double deck bus which has been converted with sofa style seating, night club sound system and great lights.
These types of tours have become very popular with stag and hen groups visiting the Scottish Capital, I guess you wont hear many stags complaining about sharing a bus full of hens!
Also uploaded a new one http://buspartylondon.co.uk/ which covers the London area