I started a new character and, after getting off of Maple Island, I noticed that while in a party, certain monsters will not be affected by the EXP rate. For example, killing Stumps while in a party (even without any members) would give only 10 EXP, yet when I leave the party they give the normal 25 EXP. So far, I've seen this with Snails, Slimes, Stumps, and Shrooms. Although it may seem a bit minor, I'd rather not be stuck in the lower levels longer than I have to be while playing with friends.