I am honest, but very positive on surveys. I will rate something a 10 even if it is an 8 or 9. On my recent cruise survey, I did not share the sommelier spilled an entire glass of water on my husband (He had to go change his pants. It looked like he peed himself. LOL) because accidents happen and the sommelier was otherwise excellent in his service. I did share that the guest service rep was rude, unhelpful, and embarrassed me over a credit that was not applied. She refused to apply it even though I provided proof. I had to politely insist based on her attitude and the principle of it.
Pick and choose what you share based on the overall experience.