If it's something I really like I'll give it a second chance. If it doesn't make it the second time I won't try again! There's so many pretty plants available that I don't need the frustration of a temperamental plant.
I water a lot here in the summer, but we live in the country and have a well. We love in sand so watering is a must in July and August. I have two ghost ferns and both are doing well for me. I have other ferns that start out pretty sad but fill in as the season goes on.