The insurance for the rental car seems almost mandatory. We might not have been very clear about this initially. When we got there, we said we didn't need insurance, but the rental company insisted that without it, we needed a credit card guarantee, and cash wasn't acceptable. This wasn't communicated to us beforehand during the rental process. I think your platform should explain this better. Since we didn't have a credit card, we were forced to buy the most expensive insurance (we could only buy the most expensive one? This feels like a forced sale), which was really frustrating.