A vacation rental is advertised on airbnb. For the picture gallery there, a picture of an elderly couple with a dog is required. Can I use stock.adobe images? Does the photographer have to be credited and is a standard license sufficient?
I think a Standard License is sufficient for this application, if it is likely to generate less than 500,000 impressions. Adobe does not require you to include a photo credit for images that you license.
Yes, you can use Adobe stock for this. For advertising, you do not need to credit Adobe stock or the photographer, and yes, a standard licence would be enough.
Look here for more information on licensing: https://community.adobe.com/t5/stock/links-for-licensing-terms/td-p/11366788
(Disclaimer: As always with licensing, this is my interpretation of the rules. I think they are correct and advice is based on reading and interpreting the licence terms and on fair use for both the buyer and the artist/stock company, but I cannot rule out that my interpretation is wrong. I'm not an Adobe employee).