Commerci Solo Voyages

I'm not sure what you mean by this, but the character EXP gained definitely varies with the monsters killed.
Normally the variation is very slight, since the waves are fixed, and if you kill everything thrown at you the difference would be at most 2 mobs out of each endless wave. But I just experimented by letting a full endless wave run unmolested, and gained about 2.6m exp less than when I do kill ~60 of them. (That is EXP from Maestra Fiametta only).
If you meant an exp bonus, besides what you get for monster kills, then say so.

Also, as far as I know, you don't need to kill any monsters for the voyage to be successful. The only ways to fail are to run out of lives, or disconnect. If you just survive to the end (e.g., afk with auto-pot), you get your vessel EXP and your guaranteed denaro profit, but of course no drops, treasures, meso, bonus denaro, or character EXP (except for the bonus you just hypothesized?)

Yes that is indeed what I'm hypothesising. There's a (linear) correlation to the monsters killed but I'm trying to find if the intercept is zero or non-zero. I'll test it with Dolce and Luna later tonight by killing nothing at all. I'm out now and my numbers aren't with me at the moment so I can't show you what I mean.

I'll include a changelog when I work on it later tonight.

Hadriel

edit: ok I realised that I used the wrong numbers for the EXP part, in that I forgot that Elven Blessing was 10% I didn't have Elven Blessing, but I had Zero Character Card. The numbers are now correct to <1% error. Thanks Sapta for prodding me on this. The EXP at the end of the trip IS indeed all the monster EXP, subject to Elven Blessing and Zero's card bonus. I'm not sure about EXP potions and buffs but I'm quite certain those go to the NPC too, and you only gain Multi and Combo Kill EXP bonuses on the spot. I think it works that way because the server holds back all individual monsters' EXP sources (e.g. Base, then bonus from potion, bonus from 2X, bonus from blah blah), whereas Multi and Combo Kills are awarded to you as THE final bonus from your attack, after ALL monsters' EXP sources have been dished out (see my other thread for this).