Oh my goodness, you're being so thoughtful to think of us at such a difficult time for you. I'm so sorry to hear about your sister. I'm sure it's super difficult to keep planning. I know you probably feel like you've fallen behind in planning but I'm sure that everything will fall into place when the time comes. The little things are not important at this point... Just enjoy the closeness you have with your FH and family - which, in the big picture, is all that really matters.
Your update on the RMB stuff is very helpful and we'll all be thinking about you when you're away in paridise (Jamaica mon!) and we'll be waiting anxiously for your return and one of our first RMB wedding reviews. Try to enjoy it as much as you can...our thoughts and prayers are with you.