Monster Hunter Rise

You get the Beloved Bouquet award for getting all the side quests in Kamura Village and Elgado that were added in Sunbreak. I'm unsure if you also need to have completed all the side quests from the original game.

Below is a list with the names of all the new side quests so you can check to see if any are missing from your list:
A Fine, Fire-Breathing Buddy
A Great Gift for Your Buddies
Amber Brilliance
Assist Upgrade Campaign!
Bag a Barioth
Bag a Bazel, Yeah?
Black Hell Hunter's Hint
Bombardier Upgrade Campaign!
Buddy Commitment
Chevalier's Sleepy Solution
Citadel Sub-Camp Security
Combo Wizardry
Cool Coal Discovery!
Cursed Buddy Gear?
Cutesy Crab Pose?
Edgy Arrows
Elder Dragon Delights
Espinas Entanglement
Fighter Upgrade Campaign!
Fur Requiting Kogarashi
Gatherer Upgrade Campaign!
Giant in the Frost Islands?
Good Guts for Gunlances
Gore Magala Mission
Grueling Training Ground
Hand-Me-Down Trial
Healer Upgrade Campaign!
In Cahoots for Cohoot Pics
Jungle Sub-Camp Security
Lagombi in the Moonlight
New Mask Mission
No YOU Get 'Em!
Not a Mer-Made-Up Story!
Palamute Gear Power Up
Prized Mushroom Picker
Red Hell Hunter's Hint
Researcher's Request
Resplendent Red Request
Spelunker Maintenance Mission!
Sprout Search
Tacky Photo
Top-Notch Training Tools
Tough Training Tools
Twisted Elixir
Ultimate Upgrade
Violent Nature