That's a relief, thanks for answering so quickly 😊 

Hi Lindsay,

Thanks for getting in touch. The main thing is weight, and being that you are within the airline dimensions stated you'll be fine, we also set this criteria for porterage standards, but being that you are just 1.5" out on the depth you'll be fine to travel with this suitcase in this instance. Have a great time!

Best wishes,

Just You Customer Care

I have just had my final information through for this trip and the size limit for a suitcase is 30" x 23" x 10".  My suitcase fits the first 2m but is curved so is 1.5" over at the widest point.  Am I going to have to buy another new suitcase (bought this one to fit with the dims in Thai Airlines guide).

Lindsay