Been on a pump nearly 4 weeks. Totally loved it from the second I got hooked up. If your settings are right, then learn to trust your pump. If you trust it and it’s consistantly wrong at certain times ot foods, then maybe your settings need review.
If you’re still worried about the tubing after you try things that have been suggested, you may need some extra security by putting some micropore/other tape on the tubing just near the site leaving a little slack between the site and the tape. Then it’s the tape bit that gets pulled first.
The tubing is very sturdy - least in the Inset IIs I use. You can even bend it and it’ll survive. If i get worried it’ll catch, then I tuck it in somewhere. You can be quite inventive about that. Carrying 2 toddlers shouldn’t be a problem either. Lock your pump, or place i elsewhere.
If you’re playing with you kids, eg without a shirt on, then tape the tubing flat to your body so little fingers and toes can’t get caught and pull. Of course not so great if you 're taping over body-hair.
Try some of the suggestions, especially near site-change time, just in case. You may find that your setup is much sturdier than you think. Eventually your kids can learn they need to be a little careful around your site. Love-handle placement would be great for you too.