I was originally worried about this episode. When I first heard of this episode, I thought it was a sequel episode to "Brother from the Same Planet" and I was concerned due to how "Kamp Krustier" turned out. Then after the synopsis released, I was concerned as I felt like it was going to do forget about Herb Powell.
Thankfully, the episode didn't do either (although, I do wish Herb was mentioned). However, the A Plot in particular is a mixed bag for me, I hated the fight between Homer & Calvin, felt like something you would find in Family Guy, however, I do like how it touches on Abe & Homer's relationship (something I know has been done before), but that post credit scene does ruin it a bit (although, I wander if Abe ever knew about Bart & Lisa's Ultimate Slumber Party). I do love how Homer uses a Pikachu hat to help Calvin put on a disguise of Homer. Abe's new love interest was kind of forgettable as she did fade into the background in the episode (alongside Marge). As for Calvin, he was okay, Melissa McCarthy does a good job in voicing him, but he reminds me of Martin Prince a lot too.
As for the B Plot, its mainly the only reason why I liked this episode, it was fun seeing Bart as the voice of reason for Lisa in this episode, do wish there were more scenes of the slumber party, but I still like what we got. It was nice to see Janey have another speaking role, and I have a feeling Kimberley Brooks is voicing her now, as Janey's voice did sound familiar. Speaking of similar sounding voices, Sherri & Terri definitely give me massive Lola Loud vibes from this episode, and honestly, I'm not a fan off it as I don't think it suits the twins. Not sure how much Grey has voiced the twins compared to Martin thou, so Grey could be trying out the perfect voice for them while trying to live up to Russi's legacy. Part of it is also been more used to Russi Taylor's voice for the twins too. When it comes to Janey's voice, I like it, although I can see Kimberly doing a voice similar to Skara from Owl House (another role also voiced by Kimberly). The only other prominent VA that I can think off is Cree Summer, but a lot of her voices sound similar to Susie Carmichael, and I can't really see Janey with Susie's voice. As for their roles in the episode, surprisingly, I think it fitted perfectly. I don't think they are overly mean to Lisa in this episode as they do point out some valid points (and are similar to the complaints that I do have with Modern Lisa. Also, the stuff they say that Lisa has done feels very Sheldon Cooper in a way). Also, regarding the points they made, I feel like they are points you could make to say, Twilight Sparkle before she moved to Ponyville, and I'm pretty sure I've seen similar plot points in other shows before where a character is called out for been a ""wet blanket". I also loved how the trio behave like kids, alongside Bart & Lisa which was nice to see. Glad the B Plot ended with them still friends with Lisa, as it could of easily turned into a "They Hate Lisa" ending. Surprised the retirement castle was okay with a bunch of 8-10 year old kids partying in Abraham''s room thou.
Also, another nitpick I have has to do with a continuity error regarding Moe, as he states that his family were gravediggers even thou a few Seasons ago it was established his family owned & worked in Mattress King, I know Simpsons isn't known for its continuity, but this is a very notable & annoying one.
Finally, something interesting that I want to point out, but I think this is the 2nd episode in a row where Maggie doesn't appear (although, do correct me if I'm wrong as I'm not sure if she appears in the beginning when the family are at the fair).
I give this episode a 8/10 (4/10 in this poll), has a pretty solid B Plot, but the A Plot is a mixed bag that goes nowhere in the end, could of been a better episode. I do hope to see more from Carolyn Omine as the showrunner, as I do think she does a good job.
Overall Ranking out of 736 Episodes Aired, I rank this episode at 337th Place between "The Seven-Beer Snitch" at #338 & "Chief of Hearts" at #336.