Can you bring in folding chairs for concert on the grass area?

Not anymore. Policy has changed, check the rules and regulations for your shows

Yes

Yeah but as stated, it's on a slant and people around you will likely be standing during the show so you probably won't use it much

Yes you can

Grass is very angled. Best use there's

That depends on the event. Best to check with the venue's website for each show you attend for a list of what you can and cant bring in for your show. Some events have folding chairs you can rent too. But ys know $$$

Yes but they have to be small.