Absences and Technology

One thing I've found that really throws me and the development of technology in my classroom is when I can't be there. I am regularly gone for district reading meetings and Fellows release day (this results in at least 2 days a month), and this significantly impacts what my students can accomplish using technology on those days. Firstly, their routines are already thrown off because I'm not there, but in addition, class can't run as smoothly as it usually does because I don't know if my sub can or will handle all the maniuplation of technology that makes class possible. They could and in that event I would be set, but if they don't they either can't fulfil the plans or don't know what to do instead. Will this become less of a problem as time goes on?