Travelling overseas at 23 weeks pregnant

Hi mummies, I am a first time mum & I am planning a trip to Korea around my 23 week mark, and I’m wondering if anyone had a prior experience of travelling around this phase of pregnancy? Will it feel too heavy to walk, should we expect any discomfort or if it’s ok? Just slightly worried and uncertain cause I dontknow what to expect. Appreciate any sharing (: thank you!