Food is the kind of business that never goes out of trend. I mean seriously, who does not enjoy eating? If your place is a tourism hotspot then probably you have too many competitors up to your neck! But what the heck! With your experience, I think you'll have a good chance about it! I would suggest to use your wife's D-I-Y skills to decorate your restaurant and give it a homey feel and a personal touch. It would also be great if you would learn about your competitors performance and it's customer's feedback so you would know what to offer and stand out!