Walkthrough: Konikoni City is a large place with many, many shops. Captain Mallow and Captain Lana live in this here town, as well as the shop location of Kahuna Olivia. Unfortunately, as you arrive, Olivia can't be found in her shop. Instead, her Probopass will pass on the message to head to Memorial Hill in hopes of finding her there. Do as the letter says and head there to find your next Grand Trial.
Ditto
Trainers:
Office Worker Dugal - Level 23 Clamperl
Items:
Eviolite - Behind Bence At End of City
Max Potion - From Jewerlry Store Probopass
TM61 - Next To Lighthouse
Big Pearl - Near Ramp To Lighthouse
Whipped Dream - From Punk Girl In Mallow's Restaurant
Sachet - From Punk Girl In Mallow's Restauant After Pokemon League
Dragon Fang - From Mallow's Father
Deep Sea Tooth - From Lana After Pokemon League
Deep Sea Scale - From Lana After Pokemon League
Diancite - Show Collector Diancie
Max Revive - Defeat Office Worker Dugal
Heart Scale - From Olivia After Eating At Restaurant
Dire Hit - Show Salonist Alolan Dugtrio
Soft Sand - Show Salonis Alolan Dugtrio w/ Honey Blond Hair
PokeMart (Throughout Game Progression):
Poke Ball - Great Ball - Ultra Ball - Potion - Super Potion - Hyper Potion - Max Potion - Full Restore - Revive - Antidote - Paralyze Heal - Awakening - Burn Heal - Ice Heal - Full Heal - Escape Rope - Repel - Super Repel - Max Repel - Honey - Poke Toy - Adrenaline Orb
X Speed - X Attack - X Defense - Guard Spec - Dire Hit - X Accuracy - X Sp. Atk - X Sp. Def
Incense Vendor:
Sea Incense - Lax Incense - Rose Incense - Pure Incense - Rock Incense - Odd Incense - Luck Incense - Full Incense - Wave Incense
TM Vendor:
TM09 - TM40 - TM47 - TM51 - TM78
Herb Vendor:
Heal Powder - Energy Powder - Energy Root - Revival Herb
Fossil Vendor:
Armor Fossil - Plume Fossil - Dome Fossil - Root Fossil - Sail Fossil
Jewelry Vendor:
Fire Stone - Thunder Stone - Water Stone - Leaf Stone
Post Game
Details: After becoming the first Alola Region Champion, you can return to Konikoni City to battle Captain Lana's sibilings. After doing so, you will be able to battle Captain Lana back at Brooklet Hill.
Trainers:
Preschooler Sarah - Level 56 Corsola
Preschooler Harper - Level 56 Luvdisc