I can assure you, it doesn't matter if other lords like you. lol.
I am a vassal of the Aeseri, I married the sultan's daughter and instantly got 75 relation with the entire royal family.
Was given the first city to fall, Poros, i've held this city ever since and put the sultans daughter in charge of it. Since then, i've been given Zeronica, and lost it while off fighting another war, then came back and was gonna recapture it before they delcared peace.
Then we captured Vostrum and it was 60% in my favor but I still dumped max influence on it to shoot it up to about 80% and who the hell is gonna argue with the Sultan's son in law? No one. I got it.
But of course this was all after a very bloody rage filled months of heavy war in which I executed about 30+ nobles from the western and southern empires for daring to attack my towns and villages. Attack me in the fields, fine you are my prisoner. Attack my cities and villages I will chop your head off.. but apparently some of my Aeseri lords were distant friends with some Imperial lords so they were not happy I cut their friends' friends uncles roomates step-brothers head off..
Despite several of my fellow lords having -100 relations with me, I got a 2nd city with way more prosperty then my first and now i'm rolling in the money with 2 cities and one with over 13,000 prosperity, cha ching.
Being a tier 5 clan, related to the ruling family, certain policies I shoved thru have boosted my influence up to 10 a day, and I never spend it on voting for other castles and cities, just don't vote, that's an option. Don't spend it on a castle whom 3 other lords are up for and you don't care who wins.
I should add, even among my own faction, many lords think I am a murdering pyschopath who likes to chop peoples heads off and no one will do anything about it because I am, stupid rich, have the largest standing army next to the Sultans, and oh yeah, I married the Sultan's daughter.
But the Sultan loves me! I keep giving him castles and cities and helping him on the battle field! The only one in the royal family who doesn't care for me is my wife! who has a relation of 0 with me!