My SIL has never taken her children on vacation. In fact I think she has only ever taken one vacation in her adult life, and that was before she had kids. She is a single mom with 3 kids (ages 6, 11, 13). My DH, DD, and DS will be headed to Disney to celebrate my daughters 5th birthday on October 13th. We're staying from October 12th-19th. My SIL's birthday is October 16th and my DH is October 20th, so we could actually really do some celebrating. I have reserved a townhouse that would very comfortably accommodate us all (I even put their names on the rental agreement as guests just in case). This weekend DH told his mom that we were going and SIL's kids overheard. When I called my SIL today to invite her along she said the kids have been bugging her since they found out we were going on Saturday. She asked me how much she would need, and this being my first trip to Disney I couldn't tell her. This is where I need help. She will not have to pay for accommodations. I figured about $850 for 4 - 6 day disney base tickets. We'll have a kitchen so can pack snacks, have breakfast, and one or two dinners at the house. I absolutely want to do 3 character meals (choosing between Chef Mickey, Hoopdi doo revue, cinderella castle, cinderellas gala feast, or backyard barbecue). We will be driving straight through, but taking separate cars so she will have to pay for gas, tolls, etc. In your experiences about how much money do you think she will need?