VisualizeAI

Out of interest, how much time did you put in?

How would this service differ from others that already exist to help validate products? A few that come to mind are dscout, Nielsen, even things like Google Surveys.
As other have mentioned, budget would be the biggest constraint for startups. They should be doing this kind of UX Research and product validation in-house.

Can you share more about the MVP itself? Without understanding what you’re trying to promote it’s hard to recommend what channels or strategies might be effective. A ‘consumer travel service’ could be a lot of things.