If anyone's interest is piqued by this article, PLEASE make sure you read the official website and/or your local event's social media page to check things. Honestly, it sounds like the writer and/or editor have been to exactly one parkrun - if they hadn't been to any and researched from the official website they'd have gotten fewer things wrong.
1. It's parkrun - one word, no capitals. If you really can't stand no caps or can't recast a sentence so it's not the first word, Parkrun might be okay but never ParkRun. Blech.
2. I've been to exactly one parkrun that has a tarpaulin on the ground for participants to leave things. In my experience, it's much more common for events to use a picnic table or shelter if available, or nothing at all.
3. The stock photo of the dog is misleading - global parkrun rules are that dogs must be on a handheld lead unless they aren't allowed at all (which is usually due to landowner rules for that specific location).
4. While most parkruns in the UK are at 9 am, in Australia they're mostly at 8 am, but some are at 7 am or 9 am. While the writer acknowledges that times can vary, she gives the impression that 9 am is the default time in all countries.
5. Yes, walkers, joggers, prams, etc, are welcome at parkrun, but some have a reputation for being less friendly to those of us who are slower, so it's worth checking the event results on the parkrun website. If you see lots of finishers at 40 mins and slower, you'll be fine (plus there's always a tailwalker which means you never come last). If you're building your fitness, you don't even need to finish but can do one out of two laps, for example, and just not go past the timekeeper.
6. You only ever need to register once, regardless of how many parkruns you travel to, and barcodes can be scanned from a printout or phone screen at every parkrun - there's no real preference except paper ones can get wet and soggy.