Keep those prayers coming!

So- I got the call for my 2nd interview with the area manager!!

Im getting very excited/and anxious!!!

I just need some advice handling...

This is a brand new place of business- and is expected to open w/in the next 3-4 weeks... NOW we have my SIL's wedding (which the 3 of us are in) plus a vacation thats already booked from June 21- July 1st... Obviously if they offer me this job- I have to tell them about these dates and Im totally scared... this is a brand new building- they are gonna need "me" there... How do I approach this?
Honestly I can arrange to be able to work 25-27th but the other dates are all wedding related/family related and there is NOTHING I can do about that...Plus this is the ONLY time off my DH is getting all summer- I really dont want to cancel our family vacation (obviously the vacation part is the 25th-27th) What should I do?

Also- any tips on what to be prepared for w/ the 2nd interview/meeting with Area manager???? Should I bring anything other than the usual? Dress code?

Thanks so much everyone for all your prayers and advice- its greatly appreciated!