Vampyr, on 2016-March-08, 19:09, said:
We are going to the Nationals. I am hoping that we won't have to play under the Midchart, as we won't be playing in any limited events. But maybe the Superchart is available less often than I am assuming.
My experience from the 2015 Spring Nationals is:
- Vanderbilt was superchart, so we could play our strong club relay system.
- Other major national events were midchart, so no relay system (for a variety of reasons relating to our specific system), but most constructive treatments were allowed.
- The one-day swiss teams we played as a warm-up was GCC, which meant we had to drop a couple of conventions.
If you play a convention requiring an approved defence (we didn't), you will need to have it available even in events such as the Vanderbilt and Spingold. Our 2nd round opponents had forgotten theirs so weren't playing multis against us. We told them we didn't care, but they still dropped it.
As I understand it, any non-GCC conventions that don't require defences simply require a pre-alert before the round. We had no problems in four days of both pairs and teams, and nobody was particularly surprised by the pre-alert.
We even played Polish Club in everything but the Vanderbilt and had no issues at the table, although we did include that in our pre-alerts.
The two unusual things I did find were that almost nobody looked at the convention cards even though we put them on the table in front of them, and the question 'leads and carding' was almost ubiquitous. In response to the latter, opponents expected a summary of all carding agreements. Odd compared to what I am used to, but hardly impossible to adjust to.
In short, unless you are pushing the boundaries the hype about the differences appeared to be much greater than the reality. You may not get to play your pet conventions (or what I call 'sensible modern methods') in the side events, but there are enough national events that this may not affect you if you play well enough to make the finals of them - typically top 50% of the field.