I've both played these adventures and run them.
Typical of the 1 hour adventures they take far longer to run than 1 hour. Prioritize which adventure based on which factions party members belong to. Unlike with tier 1, there is no overarching plot, and the quest giver doesn't seem to get mentioned again (I have not seen the t4 adventures yet). None of the locations seem to come up in other adventures that I have seen.
1 - I ran this one but did not play it. It was one of my favourites. I would recommend using the time saving options (I did this for all of the sessions I ran, though it doesn't make sense for other enemies to explode). It was a good opportunity for gross descriptions which the players ran with.
2-This one can take time due to lots of combat. When I played it was completely derailed by a druid with a staff of the woodlands conjuring a wall of thorns. It's one of the few adventures that requires medical skill proficiency, though failure doesn't seem to have much consequence.
3- this one can take a ton of time if charm/control attempts by the NPCs are successful (which is likely with the trap). I was expecting an adventure to get into more detail about some of the questions raised at the end. I think this was a missed opportunity. Characters without ranged attacks might have a hard time, but a party with lots of immunity to charm might have too easy a time.
4-I really enjoyed this one, but again it can take a lot of time with a BBEG spellcaster using charm/control. The entry can take a long time to figure out. When I played it the DM penalized us for finding other working solutions, unlike the text directed. The squares on the floor could lead to a quick TPK through accidental friendly fire, but didn'tcome into play in my experience.
5- I did not play or run this adventure. It's notable for the hobgoblin iron shadows, which I haven't run into elsewhere.
Overall this was ok. Like someone else said, I like the idea of 1 hour adventures of a higher tier, I just wish they actually were 1 hour, and seemed to have more connection to the rest of the season.