I have been running tubeless tyres for around 7 years now. The good news is a lot less flats. Since running tubeless I have had the usual thorn’s and even a large screw stuck through the tyre none of these have caused the tyre to deflate while out on a ride.
You will definitely need a track pump to get the tyre back on if you ever need to take it off and put it back on again. Trying to get a tubeless tyre to seal on the rim with a hand pump is almost impossible in my experience.
If you do need to repair a tyre while out and about the good news is you do not need to remove it to do so. Find the offending puncture place and then plug this with a Panaracer tubeless repair kit £7.50 repairs multiple times and works with the tyre still fitted. Just blow up afterwards takes 10 mins or so and totally secure.
I would never go back to tubes and I never carry one with me whether out local or on a long distance ride. Carry a tyre boot just in case you slash a tyre as well though. Goods news is the extra kit weights next to zero.
Hope you enjoy the new bike.
Rich