Honestly you could go either way. Some people see pregnancy even at a late stage as a minor irritation and still go out running, cycling to the gym etc.
Others have a lot of discomfort but can muddle by with every day things in a bit of discomfort, anything more is a bit much.
Then there are loads like me, who can't walk for more than 5-10 minutes without being in severe pain, sit upright for a similar amount without being in extreme agony and getting limited sleep at night due to the pain too.
I'm normally very fit and healthy (40-50 miles of walking a week, ski, cycling, bit of running) but pregnancy hormones destroy my body to the point I am overtaken by 80 year olds in the street most days. This is my fourth, so I know I'll go back to normal, but pregnancy does not "agree" with me, heh.
And that's leaving aside the whole early labour thing - my first came in a few hours at 36w6d, second was 35w5d, third 38w2d. And you never know what complications you may have later on that prevent you from travelling (high blood pressure, preterm labour, placenta issues, nausea..)
As it's your first you won't know for sure how you'll be so leave it open if you can. It could well be you're totally fine but don't completely commit!