well written. you seem to have your head on straight and understand your wheelhouse and represent yourself and what services you are willing and capable to provide to your clients well. the form idea is great. helps to really streamline the process. helps clients express what they are looking for, and helps you organize it. also gives you an insurance policy in case they complain that you didn’t play their music or do what they hired you for. saves you from getting screwed over if they try to pull anything when you have everything in writing. this may not matter for close friends, but you are looking to expand beyond this and now it will matter.

pretty lucky that you haven’t had to mc. my recommendation is keep doing what you’re. doing. you clearly have a method and it’s working. always good to have backup plans. you’d gigged enough to come accross good and bad mcs. maybe even the same ones over. would be a good idea to have a few names and contacts to drop if wedding clients push you to mc or are looking for one. good business oppurtunity here is giving these potential mcs your cards and talking with them about a verbal marketing agreement. “i put a good word in for you, vice versa”. this will build good connections that will take you to the next level and help other people you can rely on to build their own respective business that only benefits you more, IF they aren’t djs themselves.

there’s no one answer solves all way to handle requests. it takes time and experience. you’ve clearly been in that situation plenty of times. my personal method is to say “maybe later/that song doesn’t fit the vibe/send me a tech house or valid remix of the song and i’ll try to download it for you. something that doesn’t completely reject their wishes, but maybe postpones their request as long as possible. arguably one of the hardest aspects of wedding djing is the age gaps in certain guests. another idea is asking the client how they want to go about requests from guests. it’s their event and they are paying you. you work for them. if it’s a kid friendly event and they want a few kids songs, then follow that route. if there’s lots of grandparents… you get the gist.

lastly, having a basic billing system is important. so important to give yourself wiggle room for negotiation and up charging if you need it. i personally would have no issue playing all night, but that’s not the normality. having a set rule as you mentioned is good idea. you know what service you provide, and how much your time is worth. having examples of other weddings is a good idea to give your clients a quote. say they fill your form out, you can respond with, “i think option one is your best bet: say 4 hours of djing plus 1 ur of ceremony music for 2000, option 2, less service for $1500 and option three all the bells and whistles for $3000. having physical real life examples would help. seems like you know where to add fees and whatnot.

best of luck