>>96554783
3 hours session (a little bit less than 3 hours)
Ok, as I feared, the start of the adventure has too little combat
Until the house awakens, combat is scarce, and since my players played SLOWLY (only first floor explored) and didn't enter the basement nor hunt the chimney witch, they genuinely found no combat encounters until i decided to just make up and force one (summoned shadows at night) to finish the session and get them to level up.
The investigation side is great but DnD is a combat game and players expect at least some combat

I also made it so multiple spirits can speak every Ouija board session. The module as intended has the DM pick one and use only that, but I thought it would be more interesting to make the players speak with all 3 and then decide which lead to follow. So they have some agency on how things progress.

So far, great atmosphere, great story, needs to hombrew in better pacing if you think your group might be a slow one. A first session should always have some combat imo