The last few days were Total Disasters!! now everything is all sunshine, should I be worried?

I was so totally and utterly unhappy. I thought my meager!! wedding was ruined even though under the best of cirstances it is nothing to brag about. I found out my little brother who I love dearly might be Gay!! when I asked him to be my flower boy and he said he wanted to do it but in a dress!! Then my fiance said that his little brother (my future brother in law) has a "crush" on my brother and they hold hands give each other "loving looks". After those revelations my life seemed to come crashing down on me. I was crying in bed and my mom came in and asked me what was wrong but I couldn't tell her. Now it turns out that they might not be gay just really good friends and they both promised that girls will be in their futures when my fiance and I asked them together yesterday. Also two of my best friends said they want to come to Reno Nevada with us and they will go fifty fifty on the cost of their room so now I have a real wedding with two bridesmaids!! Since my fiance and I are both "green" and want to have a small carbon footprint we decided to squeeze them into the two cars that are going; now it's five in a car instead of four. What if one girl's bf wants to go can we squeeze one more in one of the cars and drive if not everyone has a seatbelt, it's about a 8 to ten hour drive? Since my little brother "likes" his 15 year old "friend" a lot maybe he can sit on his friends lap and they could share a seatbelt. I'm sure they would like that a lot. How do I convince my parents and his parents that it's ok to have so many people in two cars because they are so utterly "old school"?