Well, we can usually mail out orders for 2x4s the next day as we have lots of them packaged up and ready to go. Then between 2 to 9 days for the Post Office to get it to you. And a few more days if you live outside the U.S.
The 3x3s, however, are a little harder to estimate. But probably, on average, it'll take about 1 or 2 weeks to get into the mail given our current amount of orders waiting to be packaged up and shipped.
Either way, it definitely will get to you in time for your April con.
the 4x6 mats are the most popular and we have lots of orders for them backed up. So they are taking us about 4 weeks to process and mail out. Then add a few days if you live in the USA, or a week or so if outside the USA for the Post Office to get it to you.
We hope to get this sorted and back to normal soon. It has been difficult to keep up as the interest in our gaming mats keeps increasing.