Some of the ways we reinforce learning, could be adapted for "hearing it twice". These would obviate any boredom or tedium some may find find due to mere rote repetition.

So, what I am proposing is utilizing simple checklists the second time around. For instance, a peer could be requested to read "our guidelines for working together” the first time; to ensure everyone had "got it" and concurs with the spirit of each guideline, each participant either goes online or is issued with Our Guidelines Checklist to either click or tick their understanding and commitment to each guideline.

Possibly, the facilitator could do the same publically, via an overhead projection or flip-chart checklist. This reinforces everyone's commitment. It sure beats a mere nod of the head or signed list.

Thereafter, the facilitator can ask whether the group has understood what is expected of everyone.

An enhancement could include a brief one-line explanation alongside each guideline on the checklist, to ensure clarity.
Alternatively, the group could break up into three or four person teams, which are each assigned one guideline to discuss and present to the group.