I’m pulling numbers out of thin air really. But, assuming this is your first time in Thailand so you won’t know where to find the best, cheap, food and assuming you’ll be doing a lot of activities, which will cost an arm and a leg for 5 adults – adult price normally goes on height, after about 8 years old we’ve had to pay adult prices for the kids. I’d say, roughly $300 per day. Don’t pass out, yes that’s a lot. We’ve done it on $50 per day, easily but these days we spend $100 or so per day. Which includes accommodation.But we know Thailand inside out, know how to get the best prices and almost never have to pay for tours and attractions. It could even be over $300. My boys would eat for Wales given a chance but we limit them to 1 reasonable sized Thai dish each. A decent Thai dish should cost you $1. – $5. With $5 being a lot really, that would horrify me if we were paying that regularly.If you’re paying more you’re ordering luxury items or you’re eating in over priced places. If you’re in beach resort places like Phuket, Krabi etc, you’ll struggle to find reasonably priced food ( research online for the good ones) and even taxis and Ubers will cost you loads compared to Bangkok. It just is what it is. Enjoy your trip! ( $ = US )

Hi Kelly, I think that boils down to whether you prefer Thai food or Vietnamese. That’s how I would choose.