Welcome to FT,

Now that the post is remedied people can help. Congrats on the nuptials.

Firstly, when are you planning your honeymoon for?

I am not well versed in the Avion reward program, and others will be along to provide more informed comments, but from what I have read the rewards do not include taxes & fees. Those fees especially have grown over the past several years to become larger and more prolific in the industry. Some airlines have higher fees and some include what the fees cover into the ticket price. When dealing with BA you'll find those fees to be on the higher end. With premium class flights departing from England you'll find an additional fee.

When it comes to searching you should also look out of SEA.