Both in the overworld and in dungeons, random encounters will happen as you walk in Dragon Quest 3 Remake. This makes it impossible to know exactly what you're about to face, be the enemy very strong or even very weak.
This game will have a lot of backtracking, be it for the story or for other chosen reasons.
When in weaker regions, random encounters can be very tedious as the enemies aren't worth your time, but luckily there are some ways to avoid random encounters. Here's how to avoid random encounters and where they can be avoided.
The main method for avoiding random encounters is by using a Holy Water.
While active, Holy Water will ward off all random encounters from weaker enemies, letting you explore freely without any battles as long as your party is at a higher level than the monsters of that region.
Another option is the skill Padfoot, learned by the Thief Vocation at level 17.
This ability lowers the overall encounter rate for 128 steps even if the monsters are at the same level or higher level than the party. This ability also only works when traveling in the overworld.
While not stated in the item's description, this item also only works in the overworld and does not lower the encounter rate within a dungeon no matter the difference in level.
It can make getting to a new location much easier if you haven't already discovered the location.
The duration of Holy Water is also based on steps taken, so no need to rush around after activating one. Holy Water can be purchased at the general shop in just about every town in the game.
Especially when you are about to go to a previous region of the game, it is highly recommended to stock up on Holy Water.
These items are only used outside of combat, so there's no use in giving them to a specific party member and taking up their inventory slots. Holy Water can be used at any time by going to your inventory and selecting the item, with only one being active at a time and a new one needing to be used to continue the effects once it wears off.