You can pay dues by setting them up as a monthly debit from your bank account by calling Member Accounting. Then, before the payment is debited, you go online and pay it with the Disney gift card. I very rarely will allow any company to debit my bank accounts but this has worked to save me money for many years.
There are various Chase offers that can give you Disney card savings. Some are CVS, Best Buy, Staples, Office Depot. Obviously access to the stores is necessary. The only one I will do online is the
Disney Store, but others are more adventurous than I am.
Other credit cards also have offers such as Amex sometimes has a Lowes offer. US Bank and Bank of America also. Most offers are 10% but occasionally you will find something a bit higher. And, you can always go to Target and get 5% which is certainly better than paying in full.