You know, solo guildleves are pretty decent EXP while waiting for a party. It isn't like you have to stand there all day and hope you get a party. Usually in about an hour or two, I would get a party invite. Behests also is pretty decent EXP.

I remember in FFXI when I leveled my DRG during the lolDRG days. People were obviously not going to invite me unless they really needed someone, so I always started my own party.

The ones who get to 50 the quickest are the ones who take initiative.