Shit changes all the time. It's hard to say. Just come prepared. Bring a hoodie in case it gets a little cold, or buy a cheap poncho if it ends up pouring. All things considered I wouldn't bet on another flash flood like that, kinda a fluke.
I don't know where you heard that, but PL only used original studio recordings for A Color Map of the Sun. All of his other albums and EPs were heavily sample based. Here is the song he sampled for Maybe Tomorrow.
If you're interested, this website can show you what songs he sampled in most of his songs.
You can download it as part of the BitTorrent for A Color Map of the Sun, includes the entire visual project https://now.bt.co/bundles/7205c6cdc81f52cd22170627b1844bf04c3f7c72031684ab50ec53fe5329ace1
They are the industry standard for the past 20-30 years. I have a pair of the MDRV6, which are the same thing, except the can has a red stripe on it instead of blue. The part numbers for the speakers inside is exactly the same tho, so take your pick. The best trait about them is they are clear, crisp, and BALANCED. Meaning the EQ is flat, the highs aren't too high, and the bass isn't overly booming. Great for listening and especially mastering.
If you want to splurge, I'd recommend getting the velour pads. I bought a set for mine and they are comfortable as hell. http://www.amazon.com/Velour-Earcushions-Technica-Mdr7506-Headphones/dp/B0081SO0RM/ref=pd_sim_23_2?ie=UTF8&refRID=18HH9F9R8FN0VF71KSC8&dpID=41BBUnyPzxL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_