Some plants drool. Be prepared for plant marks on your gown.
If you are working or in school, a wedding planner is a good idea, also, if you are planning an ‘away’ wedding (6.5hours), having help is good - does your old boss want to be the planner?
If not, prepare to spend a lot of time on the phone, and a good amount of time going from place to place, and a fair amount of time being SHOCKED that people actually spend that much money for this stuff.
Avoid taking out a loan if you possibly can. A lovely tea wedding reception is cheap and easy, and kinda nice.
Advice handed on from my mom the minister (retired).
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The essentials are pretty small - you, him, witness(es), license, officiant if you don’t have a Quaker service.
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Go for the symbol, not the jewelry. That is, for everything you really want, take it to the symbolic level first, and build up from there. The rings are symbols first. Same for other trappings. Think about what they mean in general, and what they mean for you, and choose accordingly.
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Check into the Catholic service - if you aren’t catholic, yourself, you might have a problem.
And my own advice:
Cheap is possible, but you exchange cheap for the time and effort it takes to locate the right stuff. If you have time, you can do that yourself. If you don’t have time, hire someone who does.
If you go back to the tent idea - Tents aren’t cheap. We looked at doing tents, and :eek: they cost more than most of the halls we looked at (once you added in tables and chairs, not to mention linens).
Try parks. And ask caterers about good locations, too. We got our lovely victorian mansion in a park on a tip from our caterer. $200 for the house for the day! Even with paying for tables, chairs, and linens, it was cheap. And really lovely.
If he doesn’t care about some item, and you want his input, try narrowing the choices for him to three you can live with. Guys don’t get into the same things we do, sometimes. China pattern? Pick a few, then let him pick from those. Etc.
The only things you take out of the ceremony and reception are your rings, some dead flowers, your dress (but you won’t wear it again usually), and the PHOTOS. Get a good photographer. And the cameras on tables is cool, too. 
Booze costs a lot. (We saved tons by having a dry party - sparkling cider for toasts, but no alcohol. Too many AA types in my family, too many non-drinkers in his, everyone else had a great time anyway.)
Remember that not everyone invited will come. Thankfully!
Having a gown made by a seamstress may be cheaper than off the rack. I got a hand made silk double-charmeuse gown that way - though the seamstress was family, so I didn’t pay for labor, it still would have been cheaper than buying one I liked.
In general, people I know who have focussed on the things that were important to them, and only did those things that really mattered, had the best parties.