I haven't done mine yet. But I have had 7 friends get married in Mexico and 4 did it legally and 3 did a symbolic wedding. No one regretted their decision and all of them were so happy with their wedding.
None of the couples that did their symbolic ceremony stated they would change a thing. However 3 out of the 4 couples that did it legally said that although they loved getting married down there, that if they were to do it over again, they would do the legal thing at home and do a symbolic ceremony. Like I said they didnt regret getting married there, but they all said it was a lot more work and a bit of a hassle. Blood work and getting the paper work translated along with the licence. It just cost way more then if they had done it symbolicly.
We are getting married in Canada, 4-7 days prior to leaving for Mexico and then doing a symbolic wedding when we get there. To all of our guests, this will be a legal wedding, but we will know the truth that its actually only a symbolic one. To us legal or not legal, the day we say our vows in Mexico, will be our wedding day and will always be our wedding day. A peice of paper shows its legal, but its what is in your heart that matters. Thats what I think anyways. We are making the legal day a very simplistic "nothing special", another day in the week kind of thing and thats it.
Its all in what you make of it and its all in what you truly want. Some people truly want to be legally married in Mexico or wherever their DW is, to others it doesnt matter. To each his own right? What is good for some isnt good for others. You have to do what you want and not worry about what other people want you to do and also do what your budget dictates too.
Hope that helps!