Our gig last night was the classic hard floor, bare wall, low ceiling, hollow stage big room. As is often the case the person who organised the party (a 50th birthday) completely overestimated how big a venue was needed for the 90 or so guests. Had the potential to be too loud due to all of the reflection from hard surfaces and half empty room. Sound check confirmed this but the saving grace was our drummer who read the situation well and reigned it all back. A bit of useful notch filtering and everything wound back on the mixing desk meant it was OK. Not perfect but certainly a perfectly acceptable sound at a comfortable volume. It really is all about the drummer tho.