1) In EB the advisor is used for scripted events (and starting the script) alone: I think they disabled normal advice. The normal advice isn't relevant to someone familiar with R:TW, anyway.

2) AAR means after-action report: a write-up of how your battle/campaign went.

3) All infantry infantry is capable of using siege towers, but the towers don't always work for some reason. It's a bug of R:TW, not EB.

Welcome to the .Org and to EB, and happy new year .