This is a great introductory adventure. It has comedy, classic monsters and a great old school dungeon crawl feel. It's very scalable which makes it ideal for on the fly trimming and expansion depending on how much time you have left in the session.
My only suggestion would be to be careful when running the Stirge encounter at the start. If you play it as written the players have disadvantage on all their attacks due to the platform swinging back and forth. Even though the Stirges have only 2hp each, the damage they cause can quickly mount up and the party could be badly wounded, dead or short of resources by the time they enter the dungeon proper because the disadvantage makes the Stirges hard to hit.
[5 of 5 Stars!]