Displays for your reception (wedding breakfast) need to be either low, for your guests to talk over or tall enough for them to see and talk under. They can be as simple as a few stems in a bud vase, to tall martini vases bursting with flowers.
Look at and work with the style of your venue, has it low or high ceilings, is there ornate wallpaper or are the walls plain, how light is it, what time of year? Will you need candles, (speak to venue for permission), fairy lights?
You don’t have to stick with all one type of design, mix and matching, especially height wise, helps guide the eye through your venue giving a fuller impression and that all important WOW factor!!
Many vases and containers can be bought with the flowers allowing you to give away as gifts or may be hired to help with budget.