Interesting, a side DO disrupting BoTB's carefully laid plans… I quite like good beer, so could be tempted to come for one at Small Bar.
However, and perhaps throwing a spanner in the works… would it perhaps be an idea to save the 'crawl' part for after the meal? Retains advantage of fixed pre-meal meeting point, avoids the dangers of a 'misconnect' and resultant failed loading of pre-ordered catering, and if people feel up for a few decent beers afterwards they can do so?
(Or perhaps I'm making things too complex…)