The best survey results for such a targeted audience are best accomplished with direct questioning. I would recommend the following steps:
1. Create a survey, whether it's online (surveymonkey) or just a list of questions in Google docs.
2. Compile a list of about two dozen hotels you want to target.
3. Call them and ask to speak to their managers. It might require some effort, but even if you don't get to talk to the person you want you can ask questions along the way.
4. Another route would be to look through LinkedIn and find people working in this capacity and email them directly.
5. Be direct about why you are asking and document everything.