I used the task list on ourweddingday.com and it helped a lot for a timeline. The wedding website and emails are a huge help though. I would definately recommend starting with that.
Such great ideas ladies. I think you can remember them in a positive and happy way which might mellow the crowd a little but not put a damper on things.
We've realized that there's no way of making everyone happy and the main thing is that you're good with your decision. i'm sure your sister will understand if you explain your reasoning to her and she realizes all of the planning and accomodating you have to do.
I wish I could help. I have a similar problem. I booked my wedding for what I thought was 2 working days after our arrival date at the riu montego bay in jamaica. now i realized that one of those "working days" is easter monday and I don't know if it's enough time...let me know what you find out!!
Pretty sure this site will help you out. I found the beginning stages of planning my DW a little stressful (deciding on date, island, resort, etc) but once you decide where and when the rest is smooth sailin'
I hope things get worked out for you. Sounds like you need to get a hold of her ASAP. If you gave her a budget and she's going over that's something she needs to work out. Don't worry though, everything will work out...it usually does!