a couple of generic thoughts...
situational awareness...access to real time intelligence of the entire situation... cell phone contact, TV/radio reports

OODA loop decision...hunker down in safe haven and wait it out, or move...if move, then do so as a "grey man" ...abandon team affiliation paraphernalia...move laterally at rear of standing crowd with purpose to get outside area, behind Police line

underscores the need for some thought on clothing....comfortable walking shoes...clothing weather appropriate for overnight trek..convey this to your significant other if slacks is not typical attire...head wear for Sun/ rain

a personal gripe... some sports venues do not allow you to bring in bottled water...I like to always have .5L bottle in my nylon cargo shorts (try to take a pack of GatorAde mix)

some "sharp" EDC items may be turned away door of venue (check first) in Florida concealed weapons not allowed in professional sporting events..

might consider a super minimalist GHB ... "fanny pack"...bandana or N95mask ,vinyl poncho/trash bag....1/2 L water ...couple of Cliff Bars...LED head lamps/batteries...Kerlix roll and micropore tape...street map...OC spray if legal