I have been lucky to have taken holidays to America and Australia in the last couple of years.
I always find it easier to eat out in America; the waiting staff have always been very knowledgeable and helpful. I have even been able to have desserts that isn’t either fruit (don’t even get me started on that!) or sorbet. On my last trip I was even offered a selection of soufflé’s that could be made to suit my needs and that was in addition to other sweet options. I have to confess to having the sorbet selection which was lovely as I was completely full from a large dinner. On going to buffets in hotels the staff are more than happy to take you and personally show you what you can and can not eat. I have been to Disney a few times and Universal Studios. At Disney the buffet was not a problem and I could even have a lovely chocolate cake, which was also gluten free. At a restaurant in Universal I was greeted by the chef who was more than helpful and recommended a pizza with vegan cheese. I had a craving for pasta so declined this. I keep saying I will have to go back just to try the pizza. I follow Sarah @gfdf-wdw or glutenfreedairyfreedw.com which is a great source of information with regards to eating out in Disney if you are gluten or dairy free.
A couple of years ago I was lucky enough to go to Australia to visit friends. I was duly surprised how easy it was to eat out; again staff were always very knowledgeable and polite. I was often spoilt for choice. The best part was I could visit a café for a cuppa and could always have a safe cake to eat and was often spoilt for choice. Things are getting better in the UK, but why are we behind other countries?