The Jambo GV we were in (summer of 2024) had a pitcher but no blender. I've never seen a blender supplied but yes with the pitcher in most of the villas we have stayed in. With that said, villa supplies can be hit or miss with some items not being replaced if they go missing. If anything is mission critical for your stay I'd recommend bringing it with you or having a plan to get one locally. For us, we always pack a few critical items in our carry on luggage and bring it with us on the journey
For a blender I would not want that in my luggage but perhaps a high quality immersion blender could work.....