Hi Queenie, sorry this is not quite what you're after, but we went on a month-long camping holiday in the second tri (but not o'seas). I felt great, really enjoyed the change of scene and doing different things - it invigorated me and yes, made the pregnancy go a bit faster. I know this is different to your situation, but I hope you can be encouraged by it.
People love to be disapproving of pregnant women - you are among the more vulnerable members of society. I know it's hard not to be affected by things people say, but you are a responsible person, you are your own person and your pregnancy is just that - yours. Go on your trip if you feel healthy and up to it, and enjoy it!