Ira, use that trip to keep yourself on the straight and narrow. If you eat it - own it! What I do is extra exercise to make up for the extra calories. That does two things; 1) Burns off the blow out and 2)The extra hard work is a reminder not to do piggy out again or I'll have to do more
I noted with interest that you did more snacking when you went home. This is something that happens. I find that the more I overeat - the more my body wants to overeat. If I stay in the boundaries I have no problem but the moment I start to over snack I find that I want to eat still more. This is "old lifestyle" thinking creeping back. The mind doesn't know when enough is enough. If you do "fall off the wagon" watch out for this...it just compounds the problem.
Don't be too hard on yourself for the Thai restaurant meal. It took me many goes at eating out before I was able to walk away from the encounter with my head held high. The first time out was such a fiasco that I was very ill and chucked up because I had overeat so much (who knew my stomach had shrunk so much that half what I would have eaten at a smorgasbord was far too much?). You are just starting out and it takes a while to build the skills to successfully deal with it. Even today with all my experience going out sets me on edge and puts me on high alert!
Do what you can - and learn from each experience.