What's the best way to word a wedding shower invite, especially since not everyone can make the wedding?

I agree there's some confusion on this question because the wording is awkward. I, too, thought you were saying these people weren't invited to the wedding (in which case, you can't invite them to the shower). If they can't make it to the wedding but were invited, that's fine, but you don't need to say anything about it either way.

And no on putting registry info on the invite.

Hi. It is a given that those invited to the shower are also invited to the wedding. So make sure that the bride/groom DO indeed send those individuals a wedding invite even though they will, most likely, not be able to attend.

YES, where I live, it is perfectly acceptable to put registry information in a shower invite....but NOT with or included in any way on the wedding invite.

It is tacky to invite people to a "shower" and then not invite them to the wedding. That really is considered to be hustling gifts.

What you could do is host a pre-wedding luncheon or BBQ for them, and word it exactly so, do not mention shower on the invites at all. Make sure it's understood that it's co-ed by addressing each invitation to Mr and Mrs., etc.

You do not include registry information on any invitations, especially in this circumstance. Word of mouth is the best way, if guests wish to buy a gift at all.

It wasn't that long ago that "hustling for gifts" would have been used to describe to opposite, and showers were understood to be for those who did not expect to attend the wedding yet wanted to give the bride a bit of a send off and some gifts to help her set up housekeeping. The elegant party where you "mined" the wedding guest list and invited all the ladies was called a Bridal Luncheon and gifts were not customary. After all, the guests were already likely to give a wedding gift and it would be greedy to ask them to attend another gift giving event.

Because a shower is a very special sort of party where gifts are required AND because invitations are sent only to people who have expressed a desire to give a gift, shower invitations can indicate what SORT of gift is most appreciated but not the value of the gift. It is up to the giver whether to spend $5 or $500.

Everyone who gets an invitation to the shower will understand that they are invited to the shower. Do not put registry info on the invite--that is hustling for gifts.

Registry info is always done word of mouth. It's tacky to include it with an invite. People invited to the shower will also be invited to the wedding regardless of whether they can attend. You don't need any special wording

You can't do that. If someone is not invited to the wedding, they cannot be invited to the shower. Registry info is ok to put in the shower invites. Most people don't do that and leave it up to word of mouth.