To accept help if people offer. I didn't know how many people in my life have been wedding planners, caterers and photographers. These are people on the guest list mainly - maybe 2 exceptions. Is it alright to accept especially if I pay expenses. I can pay food expenses. It looks like I can print most decorations at home.
Re: Is it okay...
So yes, accept help from friends that offer - but expect to pay them for time and services they are providing to you on their day. (+ expenses)
Just to give you an example... If it's a friends wedding and I'm going above and beyond I take charge of the photography. I'm there early, they'll do a first look, I'll shoot all the set up, ceremony, post we'd photos with all their friends and family, and reception. I'll be working all day to get the same plate of food I would have gotten as a non-working guest. Then I go home and I spend the next 40 hours times 3 weeks editing your photos so you have a beautiful finished product that I would be happy to have my name associated with. So for 128 hours of work you think paying for me to be able to work, and the food while I'm there is enough? That is not how you treat friends.
Friends are your best resource, and if you want their help offer to pay them full price plus expenses to show them you appreciate them not getting to celebrate your day with you as a guest. Be generous with your friends. If you don't wish to do that and you can't afford your friends professional help, but they offer to help - utilize them as a resource. Tell them up front "it's not in my budget to be able to afford you, but I'd like your help interviewing at the level I can afford."
I often vet and refer more budget friendly photographers to my friends that ask, but can't afford even my "friends and family" rate.
Bottom line: yes accept help, don't try to not pay for the help you're getting. Understand help means assisting, not in lieu of payment.
Sometimes it's best to go with a pro and a contract. No feelings to be hurt if things go wrong.