In addition to this nanowrimo nonsense I'm doing, I have my first session running a game for more or less strangers coming up on Saturday.
I'll be running B/X and plan to do a traditional dungeon crawl using one of the many available one page dungeons.
Of the ones I've tested, many have a significant number of empty rooms.
While I like empty rooms, my playtesters expressed that they wanted more to do - at the same time, they aren't familiar with the old school paradigm. And, the reality is I have 4 hours to run the thing to conclusion. There's no going back next session (although i hope to find enough interest that people want to do a B/X campaign of some sort).
I could just throw in more encounters I suppose, if I find interest waning or time is available - certainly adding wandering monsters to the playtest helped in that respect.
I'm not really worried about running the game itself, or improvising or anything like that, so much as having an adventure the players will enjoy.