Every boating holiday has it’s “incidents” they all add to the fun.
As long as you have someone else with you who can jump ashore, pull on ropes and tie knots you should do alright. Because you have one person driving you do need at least on other casting off, fending off, tying up.
The juntion at Yarmouth is seriously tidal and if you pass through there it has to be at the right time to make sure you get under the bridges. At high tide, (depending on your boat) there is every chance of getting jammed on the underside of the bridges.
Can’t remember the name of the water south of Yarmouth but it’s about three miles long and can be quite choppy, good fun though.
Fishing is good. Plenty of pubs.
Shops are few and far between so stock up when you get the chance.