I have maintained two 90 gal. reef tanks with low bioload for 3 months without a skimmer. I do have a refugium, but I believe in skimmers and will reconnect mine once I have completed repairs. ($$$) I see that my dissolved organics have increased (obviously) since taking my derelict skimmer off-line, but nothing life threatening has occurred... I doubt that your system will be bothered significantly in the short term, plus this is a good opportunity to observe your system without a skimmer and see the difference!
Good luck
-Stephen
Good luck
-Stephen