@Finalegend ln/wn to manga is almost always 50/50 with me, some things I like far more in the manga, some things I like more in the ln, and it was long enough ago that fine details are kind of missed on me.
overall, most manga based on ln/wn need the text version for context due to skipping over or simplifying things for manga which tends to cause issues.
im doing a quick skim, I think that the manga fast tracked the selling point, i.e. the gorilla waifu, and also did the story out of order for the first 2 chapters just so they could start on a more action note, i'm fairly sure that till the skeleton was a bit more drawn out in the (ill just call it ln regardless) ln, I also think that there was a bit more to the story of him, going forward I think it felt a bit less 'lets get to the next destination already'. as for the donkey part, I was losing my shit reading that, I cant 100% remember how I thought of it, but I think it was more or less 'this is exactly how I pictured it' now where we are today, its been a few years since I read the story even when the manga started, translations were... slow for what I would say is a very short and given the style of writing, simple, story, so I didn't bother keeping up on a chapter to chapter basis, granted I should sit and plow the rest, so I don't remember the dual, but I do remember him putting 2 and 2 together and again, laughing my ass off at the ridiculousness of the situation at hand.
overall, the manga is letting me see what I was envisioning in my head, and its not actively pissing me off the way some ln to manga's go, I would say its doing better then somewhere it's very obvious that shit is getting skipped over, most of what's skipped is flavor text that makes the story more engaging, but wouldn't translate to a manga unless you slowed the pacing down. I consider 'Tsuki ga Michibiku Isekai Douchuu' to be somewhat of a gold standard, and this isnt that, but its not unreadable/painful without prior ln knowledge.
kind of a rambly answer I know but its a bit more complicated than a smile 'it's better than I normally expect'