Where I am from a cash bar = cheap. Again you pay for what you can afford. It is better to only serve pop and water than to have a cash bar.
Where we are from, if you have a reception at a hotel, you must either have a hosted bar or cash bar. No exceptions. Even if you offer champagne and have wine on the tables, you have to have a bar.
Because land is at such a premium here, it is also not uncommon to have a church that does not have a facility to host a reception. For example, my parish has a community center, but for dinner style seating, can maybe seat 125-150 people. It also does not allow liquor.
Where my cousins live, in the midwest, there are many facilities you can rent, and then you can use a caterer, or do it yourslef, and that can include liquor. Not around here. The only halls often have an assigned caterer, and liquor requirements.
Bottom line, you can host a budget styled wedding and have it not be tacky. Having punch and cake in a church hall? Fine, just make sure it's not a meal time reception, and make sure you have enough cake and punch for all of the guests.
Cater it yourself with family and freinds helping. Again, no problem. Just use common sense.
I don't think anyone here is saying that low budget = tacky. They are sharing stories where tacky = tacky.
I have attended weddings that range from punch and cake in a church hall, to family catered weddings, to picnics in the park, as well as very fancy, county club styled with hosted bars. They all were fun, just in different ways.
I did attend a wedding that brought tackiness to a new (and in my experience unheard of) level, that I have never seen matched again) On the RSVP card, there was not only a spot for the RSVP, but also how much it would cost, depending on your dinner cost, because the bride and groom couldn't afford a recpetion. Now that's TACKY.
Julia