eSIM work very well. I have my UK eSIM and started in Thailand with physical DTAC SIM but will convert that to eSIM soon. Keep the SIM tray spare just in case.
I’m a keen amateur photographer and want the best glasses, so I opted for Nikon lenses and some rather expensive German frames. Add to this that I needed varifocals so I paid a record amount for this pair at KT Optic. I think that if I’d opted for two pairs, one for reading and one for long distance and I wasn’t too bothered about quality then I may have got a cheaper deal than in the U.K.