My ex-spouse is trying to say that we did not do or have certain things during our marriage?

It is to your spouse’s advantage to offer proof that you had a lower standard of living during the marriage, since that would set his or her payments to you at a lower level. Conversely, it is to your advantage, as the receiving spouse, to show that you both enjoyed a wealthier more lavish lifestyle. Judges will ask for a "show of proof," or evidence of your claims, so be prepared to offer receipts for purchases, photos, insurance records, witnesses, etc., to support your claims.