Most Star Wars rides at the park require the guests to wear seat belts for space travel. But the ITS at the beginning of Rise of the Resistance just has handrails. It even gets involved in a battle with TIE fighters, and it's still smooth enough that you're not told to sit down. Well, it's the only time your ship is being flown by a competent pilot, so of course it would be significantly less rough.
There's actually an in-universe justification for not selling (toy) blasters and weapons. With the First Order around, active stormtrooper patrols and the place essentially under martial law, selling weapons is a very good way to get arrested.
There's in-universe justification for the Stormtroopers not attacking park patrons. They're visitors to Batuu and the First Order wants to make a good impression on them so they'll support the First Order. It's the classic idea of winning hearts and minds.
The stormtrooper battalion guarding the hangar in Rise of the Resistance is cordoned from park patrons via railings. This makes perfect sense in-universe as the visitors are supposed to be prisoners and the railings provide an extra barrier to keep them from trying to escape or attack the guards.
