The Double XP Weekend boost is not applied to the XP earned through the following items or activities:
Assist system
XP lamps
Tomes of experience
Ectofuntus
Cremation
Dragon rider amulet
Auto-sanctifiers
Goldsmithing gloves
Brawling gloves
Player-owned house altars
Wilderness Chaos altar
Dungeoneering wildcards
Sacred clay
Urns
Ancient effigies
It also does not apply to XP rewards given on hand-in for the following activities:
Quests
Daily Challenges
Jade Vine
Strange and golden rocks
Other Distractions & Diversions
Harvesting animal produce from Player-Owned Farms
It does not apply to XP awarded on hand-in of points or tokens. Examples:
Slayer point rewards
Brimhaven Agility Arena tickets
Dungeoneering tokens
The Invention skill benefits differently to others:
Item XP is gained at +50%
Making items on a workbench (charge packs, siphons etc) gives +50% improved XP
Disassembling random items (logs, potions etc) will give +50% improved XP
Disassembling/siphoning equipment does not give improved XP
Ironman accounts do not receive an XP boost on Double XP Weekend.
Finally, while stored Bonus XP itself is not boosted, it is still awarded alongside the boost from Double XP Weekend. So a member training a skill with stored Bonus XP on Double XP Weekend will receive +200% base XP.