Once you use your first VQ at the park you purchase it for, you can book at any park if your ticket is eligible for park hopping. No need to purchase for a second park.
I would not anticipate seeing past Aug 14 today as that’s the date the longest ticket is eligible to book today. Tomorrow the date should increase by 1 to Aug 15th.
Yes, according to the Disney website, this is the case. Once you use the first VQ at the original park you may purchase for any park. What is not clear at this time is, are tiers involved in what you are eligible to book at the second park?
Ie if you use a Tier 2 at the first park, are you restricted to which attractions you can book next? Disney has never officially announced this detail either way. I’m hoping there are no restrictions but I don’t believe we know for sure.