BTB questions.

"Last orders":
1.

Quote :

ending the game
The warriors have been indulging in the inn's
refreshments and are now very refreshed indeed! No
Rout tests are necessary – the winner is the player with
the last standing model. Any player may voluntarily
rout if the excitement becomes too much

That means that I can take a voluntary rout at any point of the battle even when there's no loses on my side, right?
2. Does ogre bouncer count as unarmed model (so he has 1A with other unarmed penalties)?
3. When fighting against warband with lower model count than mine, do I have to adjust number of warriors to "equal the chances"? Or can I just keep roling to see who fights?

Well, you're gonna need to tell us what rules your referencing if you want your questions answered. Source book, page, and paragraph would be ideal, because I have no idea what your asking in your first two questions.

With regards to your third question, it depends on the format you're using. For one-off games (games not part of a league or campaign), both players typically have a set amount of gold they're allowed to spend on their warband. One warband may be larger than the other, so long as neither has exceeded its budget (typically 500GC).

In a league game the warbands don't have to be the same size or gold value. A weak warband may end up having to fight a strong warband that has more models and better equipment. Either warband may choose to voluntarily rout at the beginning of their next turn (recovery phase) if at least 25% of their models have been taken out of action.

Right   all of above questions are about 9th scenario "Last orders" in Border Town Burning campaign.

1. Well the sentence doesn't say you can ignore the rules for voluntary routing so I would say you still need to have lost 25%.

2. I'm not going to look it up, but if the bouncer does not list a weapon on his profile, then he is unarmed. (Thus the rules for fighting unarmed would apply. If you allow him to search for an improvised weapon, then he can find a weapon like any other patron.)

3. I really think it is up to you. We generally get so excited to start playing that we don't read the rules to this scenario at all and have to search for stuff as it comes up. So we often play with unbalanced numbers. No one has complained (beyond the guy who complains about everything).  

When we do limit numbers it is mainly due to time constraints or the capacity of our smaller bars.