Thanks, Beverly Lynn, one more voucher question

[Chinadoll]

Again, thank you so much for your help. I was able to get vouchers for the difference in our fares from LGA to MCO. Originally purchased fare of $177.50 (thru 800#), saw that on-line had same so I purchased them through the 800#. Checked the website 5 days later and the fare showed $130.30! So I contacted the 800# and was told that they had a new fare for the SAME flights for $143.50. Took your advice fearing that the fares may go up and got vouchers for $34. Now if the fares via the 800# number goes down again - can I get another voucher for the newer lower fare? I know this is crazy, but if I can save a couple more dollars I might be able to apply these vouchers before they expire and go to Disneyworld again within a year! Thanks again!