A very quick, and rewarding tip for those of you looking to enjoy this weekend:
Requirements: 80 Mining or boost to 80 Mining
I just got 60k mining xp in just a few seconds.
A few hours before the Bonus XP Weekend started, I did Diamond in the Rough, and a friend said that there was a hidden bonus after the quest was completed. It was worth 20k mining xp. So I decided to research this, so I could also reap this reward. RSWiki mentions that this bonus stacks with items such as, the Lava Flow suit, Pendants and Prized Pendants of Skill, and other mining boosts. What it didn't mention was a BXPW stack bonus, or if the Mad May Necklace worked. So I decided to try for myself.
I don't have any other items beside my Mad May Necklace and the Bonus XP Weekend 2.0x multiplier. What could work is a Mining Ring from Clan Citadels, though I didn't try it.
Enter the Kalphite Nursery, marked on the world map as being north-west of the Kalphite Lair, and head east into the tunnel. You're backtracking the tunnel route during the quest. Once there, return into the room you were placed in after the quicksand trap was triggered. There's a small crack on the ground.
Mining it without any boost is 20k xp. I received 60k xp. Those without any items would get 40k xp, through interpolation, if they did not bring any items, from now through Monday.