Hi there Amark! 
You sound like someone we may enjoy having in our small, but committed, community.
We would have NO problems with your work-related absences from the game. My Co-GM and I are available for RP outside of the “normal” event times that most guilds use (8pm server time on Fridays/Saturdays) and we frequently RP outside of those times ourselves, so you would have the chance to contribute towards our plotlines outside of scheduled Campaign Events if you cannot attend those events in person.
We could easily find important activities for your characters to do that will have just as much of an effect on our storylines as the actions people take in our Campaign Events, whether the RP takes place in Discord or in-game, whatever is convenient for you. This would ensure your character makes meaningful contributions towards our plotlines, earning respect and a reputation in our Guild for their actions.
If it helps, we also post brief updates about our ongoing RP Campaign in our Discord server so that all members can keep up to date OOCly on how things are going for the Guild’s latest adventure and feel included in the conversations that we have about our RP. This means people can stay up to date OOCly without needing to log in or take part in an event personally.
We are also happy to accept members who feel they lack confidence or experience in RP and provide a safe, nurturing environment for them to grow with us.
We’d love to talk to you about joining us, if our guild holds any interest for you. I don’t want to leave a wall of text here so please feel free to check us out on Argent Archives here: https://www.argentarchives.org/node/274953
or on our Forum thread here: [N-RP] Moon Haven - Adventure & exploration amongst friends!
You can also whisper me in-game, or my Co-GM Theondrid, if you’d like to speak to us directly.
Whatever the outcome, I hope that you find a home in Azeroth that suits you.
Fae xx